Starting Problem- Please help
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You wiped out the cam probably.
Highly doubt stuck lifters or sticking valves.
Probably should have removed all the spark plugs, squirted some oil into the cylinders and turned the engine over by hand a couple times to lube the cylinder walls and then installed fresh plugs. It's possible the piston rings are broken up and scoring the walls now.
Josh
Highly doubt stuck lifters or sticking valves.
Probably should have removed all the spark plugs, squirted some oil into the cylinders and turned the engine over by hand a couple times to lube the cylinder walls and then installed fresh plugs. It's possible the piston rings are broken up and scoring the walls now.
Josh
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Freshman User
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I found out some info on the engine. I was told by my uncles brother that there is a rebuilt engine in the truck along with rebuilt heads. They installed the engine in the truck about five or six years ago but the engine was never started. I was wondering if its possible that the piston rings collapsed since there is no compression. What are your thoughts on this?
Posting Guru
Joined: Mar 2007
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piston rings dont collaps...I agree with previous post, the rings probably rusted to the walls, and cam issues... Plus since it was never fired. You dont know if it ran right in the first place.
My brother built a pontiac engine, and something side tract him... A few years later, he called, I said I wouldnt even consider cranking it over till you take the heads off. He did. and one cylinder had a valve open, and that one was loaded with rust.
My brother built a pontiac engine, and something side tract him... A few years later, he called, I said I wouldnt even consider cranking it over till you take the heads off. He did. and one cylinder had a valve open, and that one was loaded with rust.
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From: Skyway, WA
Its vital to a new camshaft, that the engine fire and run right away for proper break-in lubrication. With the amount of cranking you've done without a proper break-in, you've at the very least ruined the cam. I think at this point you need to begin disassembling to find out what you have worth working with. Broken rings in the oil pan? I think I'd begin by dropping the oil pan and seeing if you have any unwanted goodies in it.
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I have taken off the carb, intake manifold, and the heads. The cylinder walls are not rusted or scored. I am dropping the oil pan tomorrow to see if there are piston ring bits in it but I highly doubt it. The gasket on the intake to heads looked good and so did the head to block gaskets. I will be checking to make sure the timing marks on the cam and crank line up as well. What else could cause no compression?
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From: Skyway, WA
Valves not sealing on the compression stoke because of bad valve seats, improper valve lash (pushrods being wrong length or rockers set too tight, constantly pushing valve down). Valves being open because cam timing is way off. Both intake and exhaust valves must be closed and sealing on the compression stroke. If it were me, I'd be installing a new cam and lifters after verifying the heads aren't warped and valves are sealing. Again, the cam you have is most likely ruined because the engine was rotated so much with out a critical break-in procedure for the cam lobes.
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From: Duncan B.C.
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From: Gadsden Purchase
inhonorofchuckgehner asked:
is there any way to test the spark plug wires...?
is there any way to test the spark plug wires...?
the longer ones will read proportionally higher than the short ones.
Any reading higher than it "should" shows it is "bad".
Old Brown Truck wrote:
...problem with my magnetic distributor pickup working dependably.
...problem with my magnetic distributor pickup working dependably.
Coil should have about a 1.1 ohm primary and 10,000 ohm secondary.
inhonorofchuckgehner asked:
Will having the carb blocked wide open flood the engine?
Will having the carb blocked wide open flood the engine?
With the plugs out, the carburetor won't have enough air flow through
it to create enough suction in the venturi sections to suck fuel.
Even with the plugs -in- the flow needed at full throttle is way higher
than a simple cranking engine. :)
When an engine is "flooded"... opening the throttle wide open is a good
way to "clear it" and in the process a "good enough" mixture will be had
in certain cylinders to fire the engine up. :)
Alvin in AZ
ps- Next time, when you think you might have a flat tire, use a meter
to find it and next time, when you want to find electrical problems use
only your eyes to find them. ...or something like that? ;)
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