Changed out my glow plugs...

[chris142]

And none of them broke off in my heads! I listened to you guys about the aftermarket GP's causing problems. My truck had Delphi's in it when I got it and they seemed to work fine. But I sure don't want to remove a head or both heads if I can avoid it.

So I ordered the correct Beru/Motorcraft ones you guys like and put those in this morning. It's just like replacing spark plugs on a gasser. Remove a wire, remove plug, screw in plug put wire back on. Took me longer to find my tools than it did to do the job.

6 come straight out. 2 can be a little hard to acess, I used a wobbly extension for those 2. Total time spent was 25 minutes.

Honestly the Delphi's looked great and IMO they would have been fine but I'm better safe than sorry.

 

[riotwarrior]

Sounds like your Delphis where in great condition, which made the swap easy.

The collective prefers Beru as they are the Motorcraft product and from the experience of the mass here, do not swell as much as other brands. Be that Delphi, champion autolite etc.

Anyway glad it all worked out well for you.

Al

 

[gandalf]

If those Delphi were in such good shape, and the replacement was pretty much precautionary, I'd suggest saving the Delphi for spares. Even a Beru can crap out unexpectedly, and it's good to have something to throw in there quickly.

Bag up the Delphi and toss them behind the seat. I've heard there is lots of storage room back there.

 

[chris142]

Yup. I put em in a bag and put them in the glove box. Got a couple of things I noticed. today. First. With the Beru ones the wait to start light stays on a lot longer than it did with the Delphi's. With the Delphi's I could start it on a cold morning w/o waiting for the light to go out, that won't work with the Beru's. I gotta wait or it just cranks and cranks.

The fast idle has always been 900 rpm. This morning it was 1200rpm. Why is this? I have not touched the fast idle.

 

[PwrSmoke]

Probably a co-inki-dinki. The glow plugs would help it start better and run smoother but once the truck was running and the glow plugs have cycled,, they wouldn't add 300 RPM to the high idle. I have some vague memory of something I read years ago about why your glow plug time has changed but I'm not sure I remember the details. Something about differences in internal resistance. I fought glow plug problems constantly with my 6.2L GM back in the '90s and they had an almost identical system to what the pre-'86 Ford trucks. I could never figure out why I had so much trouble with the 6.2L but got 19 years of service out of the original plugs and controller in my 6.9L Ford... they are almost identical! If it comes to me about the time change, I'll post something back. Look on the 6.2/6.5L GM diesel page <www.62-65-dieselpage.com>. He used to have some really good stuff on glow plugs there because they are a notorious problem with the GMs. Also, Kennedy Diesel used to have some super glow plugs that you couldn't burn out. You could literally hook them up to a battery, walk away and hours later the plug was still glowing, eventually running the battery down. That was the final cure for my 6.2L. I wonder now if they would work in a Ford.

 

[chris142]

It did it again today. I turned the fast idle screw back into the solonoid to lower the cold rpm.