Re: OT-F250 glow plugs

Posted by thejdman01 on January 03, 2006 at 06:33:08 from (152.163.101.7):

In Reply to: OT-F250 glow plugs posted by m wdd on January 02, 2006 at 17:24:58:

Maybe I will add some horror stories. On Gm diesels (no wise marks about duh gm's) They were sticking right out the head on the head. REAL easy to change. The only problems were the constant heating and cooling of the engine coupled with road salt could make them be TERRIBLE to change. Then you get some wham bahm wrench jocky in there and they would snap the heads off of them. Now your only recourse is to drill the glow plug out and tap it. If you do that on the motor it is very very difficult getting even a hand drill down there+ while drilling if you went too far the tip would fall into the combustion chamber. The end result, you were taking the head off. There are silly stories of taking the injector out and spinning hte motor over using a shop vac. As soon as you see the glow plug youll realize thats like suckign a golf ball through a garden hose. The only real way so that you know that you get all the chips and flakes so you dont imbed them in the piston is pull the head. Also the old early glow plugs would hve a habit of swelling. They would swell and you could unscrew them but they would not fit back out the hole. Again pul the head. You might as well try it as nok shop that i know of will accept the liability and responsibility of doing just glow plugs. Ie if you take it to the Ford dealership or whoever and they snap the head of the glow plug off dont expect as they wont eat the labor of tearing hte head off "because they broke it". Just be aware of the possibilities and be prepared if somehting happens. Your best friend is penetrating oil, good stuff, soaking them, slightly loosen slightly tighten, slightly loosen, spray, loosen, tighten, tighten spray back and forth back and forth again and again until they come out. Itdoesnt take alot to break a 10mm hex off even on a 1/4 inch rachet because they arent hardened at all as they are not relaly holding something together.

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