motor problems

[bobaganoosh]

I have an 88 vert. and the motor spins with a wrench but when i get to one particular spot it stops and locks up.

my nephew was driving out of the driveway when it locked up and died.

any ideas what could cause this.

I think it is possibly a droped valve that is blocking the piston. could it be anything else

mike

 

[ethangsmith]

Did the timing belt snap per chance?

 

[bobaganoosh]

I haven't got into the yet so I guess I'll checkthat first

if it did is there a possibility that some valves are bent

mike

 

[bhuff30]

The engine is not an interference engine. It is physically impossible for a valve to touch the pistons (unless you were to get huge lift cam and/or mill the head a whole bunch for compression). Even then, the valve will compress the spring instead of causing damage to the valve or piston. I doubt this is your problem.

I suppose it is possible a valve broke off...

can you turn over the engine after taking out the spark plugs? You could also stick a screwdriver in the spark plug hole and feel for an obstruciton in the cylinder.

Then, I'd probably pull the valve cover and look for problems. Then, pull the head.

 

[bobaganoosh]

thanks,

I'll keep the post currant for anyother questions

I don't know much about 2.3 or fox body cars in general . I have two older mustang 66, and 71 that I am more familiar with so I'll have plenty of questions as I get into this one

mike