I have a 92 F350, 7.3 and have had a problem starting. The wait to start light would only come on for about 1/2 a second and go out. I would have to crank forever to get it started even in not so cold weather. I'm fairly new to diesels so I thought that might be normal. Lucky I didn't burn up the starter.

After reading some of the posts I tested a couple of gps with a test light and got nothing, so I decided to replace them. I read some of the horror stories about losing part of the plug in the pre chamber, and was not looking forward to the job.

I pulled the connectors on all the plugs and sprayed a generous amount of PB Blaster around each plug and let it sit for about 30 minutes. Some of the plugs started coming out immediately with little effort, and others that seemed hard to break lose I sprayed more PB Blaster on and let sit a little longer.

As it turned out all the plugs were Motorcraft Beru, and once out only 4 plugs actually tested bad. Since new plugs were only $8.19 each I decided to replace them all and maybe avoid this problem for a while.

The wait to start light now comes on for about 7 seconds and it starts on the first crank.

Here's a tip for getting to that plug below the fuel lines. Use a 1/4 in. deep socket to fit the plug. Take off both fuel line brackets so you can use a 1/4 in screwdriver type handle to attach to the socket by pushing it between the fuel lines. My handle had a 1/4 in attachment on top of the handle so I could attach a rachet to the handle. It worked great, and only took a couple of minutes to take both brackets off and put them back on.

 

Hvydudy,
That's a good idea for a tool for the glow plugs. I may just try that the next time I have to mess with 'em.
I've never messed with the injector line brackets before as I read of one guy who left them off and couldn't figure out why his injector lines kept snapping and spewing fuel all over the place.
Glad to hear you've got your g.p. system back online. R.A.

 

I dont mess with the fuel lines. Just use a 1/4 drive ratchet with a 6-10" extention, u-joint, and 3/8" deep socket. Then you can just go around the lines.

 

Yes, those u-joints make life a look simpler. I use my 3/8 in drive one every chance I get.

Mine has 184,000, the only major problem I heard about was the auto trans was rebuilt at 130,000.

 

Seems like we are all prone to fiddle with the gp's quite often and those darn fuel lines always get in the way ! Do you all think maybe we could fit those high-pressure aircraft type rubber lines from the injestion pump to the injectors? I think I'm going to try to work on this in the near future, plus it would look swell with eight wire mesh lines running over the engine!!
Magic