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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 27153
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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Have a 1992 Robin 2 cycle gas engine. Motor spins over,

Customer Question

Have a 1992 Robin 2 cycle gas engine. Motor spins over, seems to have compression, have not check with compression gauge. Has spark, has gas in carb bowl but will not fire. Motor was running, shut off would not start again.
Ron
Submitted: 5 months ago.
Category: Small Engine
Expert:  Curtis B. replied 5 months ago.

Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!

Expert:  Curtis B. replied 5 months ago.

Need to check the compression, has to be over 60 psi. With spark and fuel, and engine has been running, not likley a timing problem. Much more likely to be compression problem. Common to blow head gasket on these engines from loose head bolts, related to the exhaust system.

Expert:  Curtis B. replied 5 months ago.

You did say two cycle, so it has to have oil in the gas? Not a two cylinder engine? The two cylinder engine can have a timing belt problem.

Customer: replied 5 months ago.
That is correct, 2cycle. Has oil in gas and gas is fresh. Has spark but will not fire on gas or a shot of ether.
Expert:  Curtis B. replied 5 months ago.

I'm thinking head gasket!

Customer: replied 5 months ago.
Will try, thanks
Expert:  Curtis B. replied 5 months ago.

Compression test will tell. I owned one of these and had no start, and only after I checked the compression, did I find the blown head gasket, and found two broken head bolts.