RPS
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| posted on 4/12/03 at 08:56 AM |
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Fuel Problems on a Ford V6
My donor car engine, a XR4i with a 2.8 MFI, has decided not to start just before I begin to strip it out. I would prefer that I know it is running
o.k. before I take it to bits as this wil help me when (and if!) I get it installed.
The problem is that it fires up first time then stops immediately, it will not fire at all then. If I wait for a couple of minutes, it will fire up
first time again and then stop.
Is there anything quick and simple to look at first, or do I need to go right through the whole system stage by stage?
Thanks,
RPS
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JoelP
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| posted on 4/12/03 at 09:27 AM |
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my amateur opinion would say fuel supply, then again i dont know much on engines! just sounds like that, waiting for it to trickle thru...
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RPS
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| posted on 4/12/03 at 09:37 AM |
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Agreed, it must be fuel, but the fuel must be getting through to the distributor or it would not fire initially. I was thinking it might be something
to do with the air flow sensor.
RPS
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stephen_gusterson
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| posted on 4/12/03 at 10:18 AM |
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I have an electronic V6 so i dont know how it compares.
BUT on my car there is a lekky fuel pump that primes the systme for 2 secs before starting, then it stops. once the engine fires, it then restarts
pumping - wonder if your fuel doesnt pump after it starts.......
checking for a blocked filter might also be a good idea.
I was told, with a jag V12 I had, to temporarily put a pressure gauge in a 't' to the fuel rail. this allowed the system to be checked for
proper fuel flow. if its starving, the pressure (often around 35psi) will fall.
atb
steve
PS - anything MFI is usually crap - the doors will sag, the drawer botoms fall out, and the backs drop off. 
[Edited on 4/12/03 by stephen_gusterson]
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theconrodkid
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| posted on 4/12/03 at 11:15 AM |
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sounds like the pump relay,should be a purpley thing poss in fuse box
who cares who wins
pass the pork pies
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mackie
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| posted on 4/12/03 at 11:30 AM |
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We couldn't find the relay. We just hot wired the pump to a 12v power supply and turned it on manually to get our MFI V6 running. Had to have
the car plugged in on a long extension cable to manouver it around the drive 
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stephen_gusterson
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| posted on 4/12/03 at 11:41 AM |
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sounds what I was saying in a nutshell!
atb
steve
quote:
Originally posted by theconrodkid
sounds like the pump relay,should be a purpley thing poss in fuse box
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RPS
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| posted on 4/12/03 at 12:04 PM |
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Many thanks, will try it over the week-end.
RPS
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