Getting hot
Running hot
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Cross-Country
Joined: Feb 2011
Posts: 87
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From: Yucaipa
Running hot
Hi everyone I swapped the 4 bbl intake and went back to the 2bbl and now my truck is getting hot and building up a lot of pressure in the cooling system. Gets hot at idle and has never done this before. The hoses get rock hard. I double checked everything and can figure it out. Any ideas???
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
If the ignition timing is too far advanced, the starter can kickback.
"Slow" or retarded ignition, on the other hand, is the opposite problem. The starter will turn over smooth, and it may even run sort of OK.
In this instance though a lot of unburned fuel will be passing through the cylinders. The exhaust manifolds can in extreme cases start glowing PDQ. Overheating is a symptom of retarded ignition timing. Not saying this is the problem here but it's definitely something to check.
"Slow" or retarded ignition, on the other hand, is the opposite problem. The starter will turn over smooth, and it may even run sort of OK.
In this instance though a lot of unburned fuel will be passing through the cylinders. The exhaust manifolds can in extreme cases start glowing PDQ. Overheating is a symptom of retarded ignition timing. Not saying this is the problem here but it's definitely something to check.
Cargo Master
Joined: Oct 2011
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From: Kenner,La.
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Cross-Country
Joined: Feb 2011
Posts: 87
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From: Yucaipa
I just realized and remembered that when I first got the truck and I went from the 2bbl to the 4bbl the truck didn't even have a thermostat. It had some kind of restrictor that made the hole smaller. Maybe there's a problem with the intake?
Senior User
Joined: Dec 2002
Posts: 473
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From: SW Florida
A number of things can cause this. Is the jetting right on the carb (did it run good with this carb previously?). Is the fan put on the right way and is the shroud on? Are the intake gaskets oriented correctly (coolant ports all open?).
What did you take off/put on in this process?
What did you take off/put on in this process?