I have 1977 toyota corolla with a 2t-c engine. It seriously lacks power, can't go above 45 MPH and has trouble going up hills. So I did a compression test: 3 cylinders were 130-140 psi but the last cylinder was 90 psi and its spark plug was dripping oil. Is this enough to cause it to lack so much power? and what would cause low compression with an oily spark plug? Is it worth fixing?
Sounds like your engine needs to be retire. Even the other three are a little on the low side, with one that is almost dead, it would be better to put in a different engine if you can find one, or get a different car.
So I should just give up on it? How could I fix it, or what other engine could replace it? If I'm not going to fix it I'm either going to convert it to electric or put a bigger motor in it.
So I should just give up on it? How could I fix it, or what other engine could replace it? If I'm not going to fix it I'm either going to convert it to electric or put a bigger motor in it.
It depends on what the car is worth to you and how much you want to spend on it. And also you will need to do some research to find out what options do you have.
low compression is caused by worn piston rings and cylinder walls, you could try to dump a can of engine restorers in there to delay the need of a rebuild or a new car (i heard a lot of good reviews on it, make sure you use the 4-cyl formula and dump it in your crankcase).
also, keep an eye on your oil level, the spark plug is probably fouled also from the oil, therefore causing you more hp.
Which cylinder? I have this problem on both of my 1981 Corollas with #1. Many years ago I had this problem too and took it to a place where they replaced the "power valve diaphragm" I don't know what that is and can't see any mention of it in the Toyota shop manual. It cost about $100 US so it can't have been that major a repair.
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1981 Corolla Wagon, 5-speed, 159k miles-- my winter wheels
1981 Corolla Wagon, AT, 125k miles-- my summer wheels
Which cylinder? I have this problem on both of my 1981 Corollas with #1. Many years ago I had this problem too and took it to a place where they replaced the "power valve diaphragm" I don't know what that is and can't see any mention of it in the Toyota shop manual. It cost about $100 US so it can't have been that major a repair.
You are referring to a part in the carb, not the engine, which the OP is having trouble with.
You are referring to a part in the carb, not the engine, which the OP is having trouble with.
Really? It is always valve 1, not general issue. Also I have had a carburettor rebuilt several years ago and that cost me $300 for the rebuild alone (I removed it myself), vs. $100 for everything on this diaphragm thing which suggests it was an easy to get to part that only involved an hour or so labor total.
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1981 Corolla Wagon, 5-speed, 159k miles-- my winter wheels
1981 Corolla Wagon, AT, 125k miles-- my summer wheels
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