Will not stay running?

Tiny
FISHY75503
  • MEMBER
  • 2000 LINCOLN NAVIGATOR
  • 5.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 251,000 MILES
I put a new timing chain kit along with an oil pump timing chain was terrible. I replaced that and tried to start but battery was old so I replaced. Then starter went bad so I replaced. The engine will start very briefly and shut off after about 10 seconds. I checked fuel pump and the PSI was 20 should be 40 so I replaced that and yesterday tried to start and again started briefly and shut off after about 10 seconds. What is so strange it will start one time every day but only one time. I took alternator off this morning and had tested and it is good so back to square one, next replacing kitchen sink, oh yes. I need anyones help who can give me some advice of what is wrong or what I need to check. The battery is brand new and when I tried to start yesterday the battery was charged down to 43% and battery has not been used for a week so how could that happen? Makes me think there is an open circuit somewhere.
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Friday, October 1st, 2021 AT 7:08 AM

5 Replies

Tiny
SQM
  • EXPERT
Hello,

It sounds like there could be an issue with timing being off.

I have attached the chain replacement procedure below. It has the alignment of the timing mark and few other tips.
Take a look at it and see if anything might have gotten missed.
The timing needs to be 10 degrees before top dead center.

Let me know of any questions.
Thank you.
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Friday, October 1st, 2021 AT 7:59 AM
Tiny
FISHY75503
  • MEMBER
I reinstalled all gears and chain per specs of TDC.
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Friday, October 1st, 2021 AT 1:41 PM
Tiny
SQM
  • EXPERT
Are you getting spark?
Have you changed the crank sensor? The crank sensor can also make the engine stall if it is not sending the correct information to the ECM.
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Sunday, October 3rd, 2021 AT 10:32 AM
Tiny
FISHY75503
  • MEMBER
Yes, getting spark and new crank sensor, could it be the EGR valve?
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Sunday, October 3rd, 2021 AT 11:19 AM
Tiny
SQM
  • EXPERT
A clogged EGR valve typically will make engine run rough, have low power, it can also produce black smoke. In some occasions it can make the engine harder to keep in idle.
The EGR can be cleaned out in most cases.

Here is a guide to test EGR:

https://youtu.be/DqUCbbKdWf4

Let me know what you find.
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Sunday, October 3rd, 2021 AT 11:36 AM

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