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Discussion Starter #1
Hey guys, Im gettng a compression test done tomorrow morning. Im just wondering what some compression numbers should be for a 1991 Talon with 172,000km's on it should be around. Thanks :)
 

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Discussion Starter #3
Re: Compression #'s *results*

Got the test done today. Should I be worried about cyl #3 :confused:
145
140
120
140
 

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140's arent bad for that compression ratio and miles.. was the car fully warmed and throttle open? try adding oil to the low cylinder and see if it shoots up with higher numbers
 

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Re: Compression #'s *results*

White91TalonTsi said:
Got the test done today. Should I be worried about cyl #3 :confused:
145
140
120
140
Yes, that is too low and too far from the other #s, I will have to look at the manual when I get home but I believe they should all be within 15 of each other.
 

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Discussion Starter #6
Re: Compression #'s *results*

knewblewkorvett said:
Yes, that is too low and too far from the other #s, I will have to look at the manual when I get home but I believe they should all be within 15 of each other.
Yea he said my wire was shot though. I think that plays a big factor and im geting new wires real soon. Any reccomendations?
 

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Discussion Starter #8

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:confused:
spark plug wire should have nothing to do with compression
:confused:
 

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Discussion Starter #10
hmmmm :confused: . Arnt you supposed to runt he car hard before the test? i babied it then it just cooled off int he shop for about 45 mins then he did the test.
 

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The car is supposed to be at operating temp when you do the test.
Shane
 
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