94 wont start

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Sep 29, 2009 | 08:51 AM

sleepyhead416

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Mountain Pass

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94 wont start

Yesterday had a friend bring his 94 7.3 complaing hard to start (even on warm mornings) So i ck found 6 bad GPs & control box wasnt working fixed that truck started fine (cool) This morning he calls me says same thing WTF I asked if WTS light worked he said yes. So now I think fuel is draining off somewere is there any special place I should look??? TY

Sep 29, 2009 | 08:53 AM

sleepyhead416

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Mountain Pass

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I also need to know how do u ck GP controler ?? Ground is good.

Sep 30, 2009 | 12:54 AM

farmert

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Joined: Mar 2006

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From: western SD

What brand of glow plugs were used? Some plugs have been knowen to burn out after just one or two uses. Motorcraft beru ZD9 are the ones to use in the 94. The return lines is a common place for air intrusion. It is very possible that the return line tees were disturbed when the glow plugs were installed. There are two orings under the tees on the injectors that get hard, and when the caps are moved it breaks the seal and the orings won't reseal.

Sep 30, 2009 | 06:14 AM

sleepyhead416

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Mountain Pass

Joined: Aug 2006

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Used autolite glow plugs. Nothing else was disturbed ... Is it possible injectors are leaking off? EV thing on top of motor & fuelpump are dry as a bone.

Sep 30, 2009 | 08:54 AM

farmert

Lead Driver

Joined: Mar 2006

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From: western SD

what does the truck act like when you try to start it? Just turn overand not fire, or start, run for a few seconds then die? The wait to start light should stay on for at least 10 seconds when the engine is cold. If one or more glow plugs are bad it will make the controler short cycle. Autolight plugs have been known to burn out after just one time use.