Getting out Injectors, Glow Plugs and Ex Manifold Bolts

F100Panel · Aug 12, 2013

Started the old girl up the other day for a small job.. Drove her out of the garage and let her idle/warm up.. It"s a diesel... I look over & it"s puffing blue... I go get a couple things and a cup of coffee. 20 minutes later I look over and it"s still blowing smoke.. That shoulda warmed up by now.. then i realize its WHITE smoke.. I go over and I smell.....STEAM.....

I"m hoping its just a head gasket... I HATE head gaskets on 25 year old motors that never been touched.. While the head is off I should have it magnafluxed for a crack, get the valves done, have the injectors rebuilt and new glow plugs..

What I REALLY hate is snapping off an exhaust manifold bolt, injector or glow plug trying to get them out...

Anybody got any good tried and true tricks for getting these things out without snapping them off? The job is nothing...unless I snap something off.... So far the best thing I"ve found for heat siezed items is put some pressure on it then rap the wrench with a hammer.. ALWAYS works on changing automotive disc brakes but when your wacking bolts on a dick brake caliper mount your not wacking on a $1000 head....

Anonymous-0 · Aug 12, 2013

You said it is a diesel. Brand, Year, Model, Engine and such might be of great importance for anyone trying to give advice. Tom

F100Panel · Aug 12, 2013

The engine is a Teledyne Continental TMD20 3 cylinder 42HP in an early 90"s Ditch Witch 1025SK Ditch Witch BACKHOE LOADER (kinda rare)

Anonymous-0 · Aug 12, 2013

Wow! Cant help you, I could write all I know about that one on the head of a pin. Tom

JDemaris · Aug 12, 2013

I've got a Continental diesel in a small Oliver crawler (OC3 with a ZD-129 Continental). Four cylinder and probably quite different than your's.

Regardless - heat works on freeing just about any ferrous metal parts (ferrous metal in ferrous metal). Not so good if aluminum is involved, or stainless steel.

I've had to removed a lot of stuck glow plugs. I just had the head off a GM 6.2 V8 with a plug that snapped right off. Came out fine once I was able to get close to it with a torch and heat it. Steel glow plug in a cast-iron head. With exhaust manifold bolts? Most stuck bolts I've come across had the bolt shanks stuck in the manifold. The actual threads in the head were not the issue. Again heat worked well. I had one recently where the bolt heads were so corroded no wrench would fit them anymore. I just cut the heads off. I still had to head the manifold to get it off. Once away from the had, the remains of the bolts came out easily.

Note - I'm talking about water-cooled engines. Air-cooled tend to get the exhaust manifold bolt threads stuck something awful.

CAROGATOR · Aug 12, 2013

Manifold bolts= a good sharp whack on the bolt head with a large hammer will shock the bolt loose most times.
Injectors and glow plugs= a little finesse

JMS/.MN · Aug 12, 2013

Broken bolts? I heat the cast, rather than the bolt. Bolt heats too quickly. Cast retains latent heat. Apply candle wax as it cools- soaks between the threads. Never failed me.

Dr. Walt · Aug 12, 2013

F100Panel:

Use PB Blaster (www.BlasterProducts.com), it is a true penetrating oil. Do not use WD-40, the "WD" stands for "water displacing" and is not a true penetrating oil.

Doc

T in NE · Aug 12, 2013

Good luck heating the head to get the exhaust manifold bolts out of a B series Cummins. Best bet is to find someone good enough with a torch that they can burn the bolt out of the threads in the cast.

Getting out Injectors, Glow Plugs and Ex Manifold Bolts

F100Panel

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Anonymous-0

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F100Panel

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Anonymous-0

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JDemaris

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CAROGATOR

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JMS/.MN

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Dr. Walt

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T in NE

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