1996 XJS Celebration won't start.
#21
I hate to be thinking like this but perhaps someone "spiked" the gas on the previous owner. You never know what reason someone is selling the car or what the story was, jealous girlfriend or boyfriend, angry person, who knows.
I say crack the fuel line in the engine compartment and take a sample of pumped fuel in a glass bottle a see what it looks like. Locate the fuel pump relay and energize it and let the pump run the old gas out. I just have a feeling something like that is preventing good running and perhaps what might still be in there might have clogged your injectors too.
I say crack the fuel line in the engine compartment and take a sample of pumped fuel in a glass bottle a see what it looks like. Locate the fuel pump relay and energize it and let the pump run the old gas out. I just have a feeling something like that is preventing good running and perhaps what might still be in there might have clogged your injectors too.
#22
There was barely any fuel in the tank when I got it, I did purge a bit out and it looked surprisingly clean, what concerned me was the lack of fuel filter.... Just an empty bracket where it should be so I am leaning very much toward blocked injectors at the moment
#23
It litterly went from the metal fuel pipe under the car to rubber hose, back to metal fuel pipe into the engine bay, fuel filter was nowhere just the brackets that normally hold it. I've fit in an inline fuel filter now
#24
Supposedly you can run the injectors with a 9volt battery. In other words, remove the injectors, soak in fuel or injector cleaner and use the battery to activate the injectors with the cleaner in it.
#25
Yeh I will be looking into that tonight, another member above has kindly linked me to his thread where he removes and cleans his injectors
#26
Oliver,
The fuel filter on a 96 is located on the drivers side wheel well. Pull the tire off and the panel is located on the inner fender liner.
How did they bypass the original fuel filter line to the fuel pressure regulator? Are you sure that you didn’t install the fuel filter on the return line to the tank.
To confirm look at the original fuel filter to insure as you mentioned was taken out of the loop.
I have had my 96...... 2+2 for over 5 years and I believe it is the best and most reliable of all the British Sports Cars I have ever owned!!!!!!
It has been on several Florida trips up North....NO issues!!
Good Luck
Softball60/Paul
The fuel filter on a 96 is located on the drivers side wheel well. Pull the tire off and the panel is located on the inner fender liner.
How did they bypass the original fuel filter line to the fuel pressure regulator? Are you sure that you didn’t install the fuel filter on the return line to the tank.
To confirm look at the original fuel filter to insure as you mentioned was taken out of the loop.
I have had my 96...... 2+2 for over 5 years and I believe it is the best and most reliable of all the British Sports Cars I have ever owned!!!!!!
It has been on several Florida trips up North....NO issues!!
Good Luck
Softball60/Paul
#27
Oliver,
The fuel filter on a 96 is located on the drivers side wheel well. Pull the tire off and the panel is located on the inner fender liner.
How did they bypass the original fuel filter line to the fuel pressure regulator? Are you sure that you didn’t install the fuel filter on the return line to the tank.
To confirm look at the original fuel filter to insure as you mentioned was taken out of the loop.
I have had my 96...... 2+2 for over 5 years and I believe it is the best and most reliable of all the British Sports Cars I have ever owned!!!!!!
It has been on several Florida trips up North....NO issues!!
Good Luck
Softball60/Paul
The fuel filter on a 96 is located on the drivers side wheel well. Pull the tire off and the panel is located on the inner fender liner.
How did they bypass the original fuel filter line to the fuel pressure regulator? Are you sure that you didn’t install the fuel filter on the return line to the tank.
To confirm look at the original fuel filter to insure as you mentioned was taken out of the loop.
I have had my 96...... 2+2 for over 5 years and I believe it is the best and most reliable of all the British Sports Cars I have ever owned!!!!!!
It has been on several Florida trips up North....NO issues!!
Good Luck
Softball60/Paul
Thanks
Olie
#28
So tonight I've done the following
Removed the fuel rail and injectors, the injectors did seem too dirty, managed to clean all the filters as got a few horrible bits out, put it all back together and wouldn't fire on the first few cranks, did the full throttle with 3 primes of the pump and she ran again but refused to idle but as long as we kept the revs up she stayed running longer than it has done.
What we've noticed is that the oil pressure gauge does not budge at all, we removed the connector and grounded it to see if it would move and nothing.
There is no oil light on at first ignition or when it's running.
Removed the CPS ready for the new one, upon closer inspection the metal end of it is quite corroded so fingers crossed a new one will make a difference but I still feel that it's more a fuel issue
Didn't have a chance to remove throttle body and clean but is on the list.
To summerize
Removed the fuel rail and injectors, the injectors did seem too dirty, managed to clean all the filters as got a few horrible bits out, put it all back together and wouldn't fire on the first few cranks, did the full throttle with 3 primes of the pump and she ran again but refused to idle but as long as we kept the revs up she stayed running longer than it has done.
What we've noticed is that the oil pressure gauge does not budge at all, we removed the connector and grounded it to see if it would move and nothing.
There is no oil light on at first ignition or when it's running.
Removed the CPS ready for the new one, upon closer inspection the metal end of it is quite corroded so fingers crossed a new one will make a difference but I still feel that it's more a fuel issue
Didn't have a chance to remove throttle body and clean but is on the list.
To summerize
- New spark plugs
- New fuel filter
- Coils tested and confirmed all sparking
- Compression good
- Roughly 5 gallons of fuel in with bottle of injector cleaner
- CPS removed ready for new one to arrive
#29
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orangeblossom (10-10-2019)
#30
Hello Oliver
In regards to your oil pressure gauge not working, this is thinking outside the box, and you might not like the idea
But
You can purchase what is known as a oil sandwich plate that fits between the engine block and the oil filter. You can then run an additional (temporary or permanent) gauge into the cab for piece of mind until your factory gauge is fixed.
Cost is not much, does mean dropping the oil though. Also drops the oil filter down an inch or so, not sure what gap you have on your car under your filter
Cheers
Steve
In regards to your oil pressure gauge not working, this is thinking outside the box, and you might not like the idea
But
You can purchase what is known as a oil sandwich plate that fits between the engine block and the oil filter. You can then run an additional (temporary or permanent) gauge into the cab for piece of mind until your factory gauge is fixed.
Cost is not much, does mean dropping the oil though. Also drops the oil filter down an inch or so, not sure what gap you have on your car under your filter
Cheers
Steve
#31
If the throttle body is restricted from closing, you could be having idle problems from that. If you don’t have time for a full clean, at least pull the intake hose off and go in with a carb cleaner soaked rag and get out what you can.
I’m interested in hearing if you have confirmed that the injectors all do spray. I know you cleaned them, but I’m not sure we know for a fact that we can eliminate the injectors from your list.
The Throttle Potentiometer Sensor is one of the sensors they car needs to read to fire the car up. I wonder if that’s gone bad when parked in idle. Shooting up the throttle body with cleaner can do that.
I’m interested in hearing if you have confirmed that the injectors all do spray. I know you cleaned them, but I’m not sure we know for a fact that we can eliminate the injectors from your list.
The Throttle Potentiometer Sensor is one of the sensors they car needs to read to fire the car up. I wonder if that’s gone bad when parked in idle. Shooting up the throttle body with cleaner can do that.
#32
Hi Paul, was a bit pushed for time so didn't have a chance to make up a rig to test the injectors, when the cps turns up if that doesn't help then I'll remove them again on the rail and test them all.
Steve thanks for that, I'll look into it, thinking it could just be the unit gummed up as it's not been ran for a while. New oil and filter will be going on soon so I'll see if that changed anything
Unfortunately cps didn't turn up today so can't really do much else but some little interior jobs but I'll put a separate post up and update this post when the new cps is fitted
Steve thanks for that, I'll look into it, thinking it could just be the unit gummed up as it's not been ran for a while. New oil and filter will be going on soon so I'll see if that changed anything
Unfortunately cps didn't turn up today so can't really do much else but some little interior jobs but I'll put a separate post up and update this post when the new cps is fitted
#33
#34
Oliver,
If the car is starting, the pump is probably working. Taking it out is a real pain, so don't think about doing that unless you absolutely know it's the problem. As you've got a filter which can presumably flow fuel at reasonable pressure, I'd suggest you go back to the injectors and be absolutely sure that they are all spraying correctly at idle conditions.
Cheers
Paul
If the car is starting, the pump is probably working. Taking it out is a real pain, so don't think about doing that unless you absolutely know it's the problem. As you've got a filter which can presumably flow fuel at reasonable pressure, I'd suggest you go back to the injectors and be absolutely sure that they are all spraying correctly at idle conditions.
Cheers
Paul
#35
Oliver,
If the car is starting, the pump is probably working. Taking it out is a real pain, so don't think about doing that unless you absolutely know it's the problem. As you've got a filter which can presumably flow fuel at reasonable pressure, I'd suggest you go back to the injectors and be absolutely sure that they are all spraying correctly at idle conditions.
Cheers
Paul
If the car is starting, the pump is probably working. Taking it out is a real pain, so don't think about doing that unless you absolutely know it's the problem. As you've got a filter which can presumably flow fuel at reasonable pressure, I'd suggest you go back to the injectors and be absolutely sure that they are all spraying correctly at idle conditions.
Cheers
Paul
The pumb definitely seems to be working but a couple of people have said to me about the chance it could still be faulty and that there is some sort of no return valve that could be faulty on it, is this not right? The fuel filter is just a generic inline one but it's brand new. Yeh I will revist them again, am I right in thinking I should hear a clicking noise from them?
Thanks
#36
Oliver,
The pump COULD be faulty but you know its running and apparently able to deliver fuel at higher revs, so I wouldn't start there, as it really is a pain. You know that the car was running without a filter and you found dirt in the injector filters. It's not just about whether they are clicking, it's really about the correct spray pattern and it's very easy for tiny amounts of debris to partially block them. Even more likely if it had no filter.
So get the injectors spraying correctly and see where that leaves you.
Cheers
Paul
The pump COULD be faulty but you know its running and apparently able to deliver fuel at higher revs, so I wouldn't start there, as it really is a pain. You know that the car was running without a filter and you found dirt in the injector filters. It's not just about whether they are clicking, it's really about the correct spray pattern and it's very easy for tiny amounts of debris to partially block them. Even more likely if it had no filter.
So get the injectors spraying correctly and see where that leaves you.
Cheers
Paul
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Greg in France (10-14-2019)
#37
Hi Oliver
This is a Part of an Injector, that many people never get to see
Which is the 'Basket Filter' that is pushed into the Top of the Injector and this is a very fine mesh Filter, which is very easily blocked by debris and that could be the reason that the Injector seems Blocked
Which of course it could well be, only this time at the Fuel Inlet instead of the Fuel (Spray) Outlet
Providing you've got some replacement 'Filter Baskets' (ebay) you can pull the old ones out with a Screw and a Pair of Pliers but before you put a New Filter Basket into the Injector, just make sure that the Injector Sprays ok (with some Carb Cleaner)
As if it doesn't you've wasted a 'Basket Filter' as they don't come out as easily as when you put them in and although the really don't look like much, they are quite expensive and if you end up replacing one or more of the Injectors, you are going to need to have enough 'Basket Filters' to go in them
Fuel Injector Basket Filters/Removing The Fuel Tank/Replacing The Pump and lots more with loads of Photos
This is a Part of an Injector, that many people never get to see
Which is the 'Basket Filter' that is pushed into the Top of the Injector and this is a very fine mesh Filter, which is very easily blocked by debris and that could be the reason that the Injector seems Blocked
Which of course it could well be, only this time at the Fuel Inlet instead of the Fuel (Spray) Outlet
Providing you've got some replacement 'Filter Baskets' (ebay) you can pull the old ones out with a Screw and a Pair of Pliers but before you put a New Filter Basket into the Injector, just make sure that the Injector Sprays ok (with some Carb Cleaner)
As if it doesn't you've wasted a 'Basket Filter' as they don't come out as easily as when you put them in and although the really don't look like much, they are quite expensive and if you end up replacing one or more of the Injectors, you are going to need to have enough 'Basket Filters' to go in them
Fuel Injector Basket Filters/Removing The Fuel Tank/Replacing The Pump and lots more with loads of Photos
The following users liked this post:
Greg in France (10-14-2019)
#38
Hello Oliver
There was a thread not that long ago about a non-functioning return valve associated with the fuel pump, instead of removing the fuel pump from the tank, I believe one was placed in the engine bay. I remember it was a 6 cylinder car.
I had a quick search through the forum, but since it was not applicable to mine - I did not bookmark the thread and could not find it
It solved the problem easily and cheaply
Cheers
Steve
There was a thread not that long ago about a non-functioning return valve associated with the fuel pump, instead of removing the fuel pump from the tank, I believe one was placed in the engine bay. I remember it was a 6 cylinder car.
I had a quick search through the forum, but since it was not applicable to mine - I did not bookmark the thread and could not find it
It solved the problem easily and cheaply
Cheers
Steve
#40
So a little slow on updates as I've been doing various things, removed and cleaned the entire throttle body, broke a bolt on the tps which infuriated me as I spent hours slowly removing it and re-threading it, all back together and no go, removed the maf to inspect and clean, on putting back on noticed a completely broken wire.... Couldn't believe it, peeled back the protection, stripped a bit of wire out and touched the ends together and she fired striaght up, ran and idled perfectly....... I could have honestly cried after spending hours of my evening trying.
It was short lived
Tried to solder the 2 wires together with no joy as there wasn't enough wire showing so decided I'd need to get another plug so snipped the other two wires and stripped them, put some spade connectors on the 3 as a temp measure, covered them in electrical tape and plugged them in to the correct connections but it just refuses again.
Have I done something wrong? Is there's a fuse for the maf which I could have inadvertently blown?