Chevy 2.5 motor trouble?

Question:
im buying a chevy s-10 and theres a problem with the gear inside the motor but dont know what it is. I bought a new distrubuter and the gear works fine on it. But i had a friend who stuck his hand down to find the gear inside the motor too see if it turned when i hit the guy and it didnt move. if you could help i would appreceate it..

Answers:

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2.5 4 cyl engines in S-10 trucks have a fibre cam gear pressed on cam, and were known to be noisy and wear out. Take ol fill cap off v-cover and look to see if rocker arms are moving, if not the gear is stripped,

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It need a new camshaft. The camshaft is what drives the distributor.

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If it is the gear I think you are talking about, the cam belt is missing a few teeth and sometimes fails to turn. I think it is time to get a mechanic to look at it. These belts are in the area of $100 and can take form 2 to 5 hours to change at whatever the local rate is$$$$$

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Why would you hit the guy if he's trying to help you? Sorry, I digress...

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How long is the shaft on the distributor? He may not be able to reach down far enough.

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Not sure, maybe this engine has a timing belt. If you take the oil fill cap off, can you see the cam or a lifter?

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If so, crank the engine and make sure those are moving. If not, timing belt is broken.

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It's hard for me to believe that the gear on the cam is worn or gone.

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Most likely it is the timing belt.

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Pull the cover & cam to inspect condition of belt and drive gear.

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GM 2.5 LTR engines did not have a timing belt or chain, depending on the year. Early ones had a direct drive system with a positive gear way between the crank and cam. Later ones had a chain that drove dampened, nylon coated timing gears. When the nylon wears off the gears the chain gets real loud. They also had a chain tensioner that was made of nylon that when worn sped up the entire process.
Having a gear noisy 2.5 engine is about as unusual as the sun coming up in the east.
The only fix I am aware if is replacing the timing gears with new 'dampened' gears &/or gears/chain & tensioner.
Just my opinion, I could be wrong.

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i agree w/mike retired gm tech
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