Engine cranks but will not start

LSGEMINI612

MEMBER
2004 JAGUAR X-TYPE
3.4L
V6
4WD
AUTOMATIC
97,000 MILES

Car cranks but won't start without starter fluid. Runs fine after starting but after turning off and trying to turn on again, it won't start without starter fluid. We've replaced the fuel pump, fuel filter, fuel pressure sensor, spark plugs, fuel injectors, coils and intake gaskets. Any ideas on what else it could be?

3 Replies

KASEKENNY

MECHANIC
18,907 POSTS

Clearly this is a fuel issue if it starts with starter fluid. However, we need to start with checking the pressure to find out if we are even getting the proper pressure.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Without knowing this we are guessing at the next possible thing but that is assuming you didn't already replace the faulty part with another faulty part. You have already replaced all the likely suspects so we need to confirm that you didn't already fix it but just replaced it with another bad part.

Unfortunately it happens too often that we have faulty pumps so that is what I am expecting this is.

Let's start with this and go from there. Thanks

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Tuesday, April 6th, 2021 AT 7:27 PM

LSGEMINI612

MEMBER
2 POSTS

We've already had 2 mechanics look at the car that haven't been able to determine what the issue is. One of these mechanics did check the pressure and didn't find any issues there aside from having to change the battery because there wasn't enough power. The fuel pump is new however how can it be determined if it's a faulty fuel pump?

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Wednesday, April 7th, 2021 AT 12:19 PM

STEVE W.

MECHANIC
13,470 POSTS

Did you also replace the fuel pump control module under the left rear seat? From your description it sounds like the pump isn't engaging to prime the system, but once the engine starts running and the ECU gets an oil pressure signal the pump starts working. You may also want to check if the inertia switch in the passenger cowl area has a problem. It can also shut off the pump to keep it from priming.

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