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Author Topic:   7.3 cold start problem
Dirt Roller

Total posts: 17
posted April 19, 2004 09:40 PM  
I have been chasing this problem for a while. It started out this truck would start on the third try every time. one try= key on, glow plug light goes off, crank engine. Now it is worse, and after the first try the glow plug soliniod starts cycling. I just bought this truck and have been slowly going through it so any advice would be great. The truck has new batteries, cables, glow plug solinoid, and glow plugs. Would any thing besides low voltage cause the glow plug solinoid to cycle? Also the truck seems to start fine when its warm. The solinoid is droping out at about 8.5 to 9 volts but this is after it did not start on the first try.

Dirt Forum Racer

Total posts: 99
posted April 19, 2004 09:58 PM  
if it is the early 90's style it is normal for the controller to continue to cycle, also there is a resistor so it is normal to have 9 volts at the glow plugs. sounds like you've covered the basics, another thing to check is the injectors have a return line that runs to each of them with 2 orings in it if fuel leaks past them you'll lose prime when it sits for a while and it'll have to crank for a long time to get fuel back up there. good luck.

Dirt Freak

Total posts: 229
posted April 20, 2004 08:42 PM  
how many miles on motor? do you know how well truck was taken care of ...could have a low compression issue...does it smoke out the tailpipe when cranking?

Dirt Maniac

Total posts: 109
posted April 21, 2004 01:06 AM
It's a great forum where you can find almost anything you want to know.

Dirt Roller

Total posts: 17
posted April 21, 2004 08:16 AM  
Sorry about the lack of info. This is an 88 E350 (old abulance), 92,000 miles, looks to be well maintained. The glow plug soliniod is on top of the controler at the back of the engine. I understand the controler should cycle the glow plugs but the soliniod is cycling very fast. I will check out the web sight. Thanks

Dirt Freak

Total posts: 298
posted May 18, 2004 12:43 PM  
If you have replaced the glow plug timer then I was told by a factory rep. to cycle the key 3 times then start. That meaning key on light off then turn key off then turn key on to light off then turn key off turn key on light off then start.This allows the glow plugs to really be hot and it should start fine.

Dirt Freak

Total posts: 370
posted May 18, 2004 08:10 PM  
autoshop is right on time. If you just get in and start cranking this thing it won't start worth ****. Glow plugs are getting weak. Turn key off and on as autoshop says and you should be fine. If not that then replace them probably.

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