starts and stalls!!

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Feb 18, 2011 | 03:19 PM

4x4jimbo

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starts and stalls!!

hay guys ,my last post was about not getting fuel.i fixed that .now my 86 f250 6.9 diesel. 4 sp 4x4.starts for about 2 second and stalls ,even feathering and playing with the pedal.what could be causing this? my only problem visible is a 3x1 inch hole on the exhaust manifold passenger side.would this cause stalling??im thinking a vacumm problem maybe?

thanks in dvance jimbo

Feb 18, 2011 | 04:40 PM

Fordranchero

Tuned

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From: Huntsville,Ont.

Sounds like you got air leaking in the lines, does it restart afterwards?

Feb 18, 2011 | 04:47 PM

doube_zero

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well first off diesels don't require vacuum to run......second you need to crack the injector lines and spin (10 sec spin 2 min rest) to purge all the air out of the fuel system. once all of the injectors are spitting out fuel at the lines cinch them back down and try.....if problem still persist may possible have air intrusion...if thats the case there are two main areas of problematic air intrusion first place would be the fuel filter at firewall..second being the fuel return lines and injector orings......to check for that disconnect the feed line from the fuel tank and feed fuel directly from a bucket...if that doesnt work it may possibly be in the injectors or more likely injection pump.....

that should just about cover it i think.....let us know

Feb 18, 2011 | 05:00 PM

4x4jimbo

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thanks guys ,ya it starts rite back up but stalls again.so pretty much i have to bleed the injectors.or search for air getting in ,ok . just curious ,what are the vacumm lines for ,plus the vacumm pump? is this just for the brake booster and cruise control?

thanks jimbo

Feb 18, 2011 | 06:23 PM

greywynd

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From: Peterborough, Ontario

vacuum pump is for the brake booster, cruise, and heater selector.

Feb 18, 2011 | 06:59 PM

4x4jimbo

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ok, so i think i targeted my problem .i went and checked my oil again after playing with it all day,and WOW my oil is waaaay overfilled .i suspect the fuel pump is leaking into my motor not good.this must be weir the air is coming from?and the pump looks wet probably diesel fuel also.so there is def need of a new one.i will get back to you guys

thanks jimbo