wagondriver69

Well ive tried everything, assuming it was a stuck seal. MMO for a few weeks on each face, new plugs cap rotor, has spark. but it has no power and takes forever to rev up to 7k, very much like it is not hitting on a rotor. the only thigns i havent done is drain/refill the gas, and check the timing. Is there anything else (besides those two) that could be causing it? I couldnt get a compression check either, and im not entirely sure what im listening for with the (pff pff tshh) or whatever. Its an '85 GS.


On another note, i have a 12a out of an 80, with most of it intact, and it supposidly ran when i got it. Is a direct swap a real chore? anything i will run into?


thanks much,
jeff b

Rx7carl

Go buy a $20 compression tester. Only way to be sure.

Rotofire

vA

DriveFast7

iTrader: (1)

compression tester is the best way to go but you can also take the exhaust manifold off and lean in there with flashlight and check each apex seal by hand. turn the motor over with 19mm socket.

it could be ignition related - not getting a good spark. replaced the fuel filter this year? fuel pump check out?

smnc

I'll give you an easy home compression test:

1. Pull the top plug fom your front rotor.
2. Turn the engine pully by hand. You should hear 3 evenly spaced noises... sort of a whoosh noise. Doesn't matter too much what the sound is, as long as there are 3 pf them and they sound the same.
3. If one of the "whoosh" noises sounds a LOT different or you don't hear it at all, you have a bad seal.
4. Repeat for the rear rotor.

The thing to remeber is just that you should get three similar sounding noises for each rotor.