50k miles. . . blown?
There's an FD I'm looking at with 50k miles on it, and I'm wondering if it's worth the effort to do a compression test. What is the likelihood of the motor being blown at this mileage? (It's a manual with Greddy Exhaust.) The vibes I get from the owner signal to me that the car is in great shape, but you can never tell.
I might do the test anyway, but of course the guy might be really suspicious of some dude moving around spark plugs on his car. If you were selling an Rx-7, how would you go about responding to my "Could you get the compression checked on this?" Thanks P.S. . . Is there anything on the Rx-7 that goes-out on average at around 50k? |
If I were selling I would say "You'd be crazy NOT to do a compression check on the car"... if he has anything to hide you'll find out about it.
If you offend him then too bad... it's your money. |
I purchased mine at around 44k miles on it (about 4 years ago) and unfortunately it had a coolant O-ring failure already. Wish I would have known then what I know now.
An unkept FD could have problems at about any mileage. |
Alright: next question-
I have a standard/piston compression checker. Apparently this can work on the rotary provided some changes are made to the device. Is there anywhere online with detailed instructions on compression checking the Rx-7 (with a standard checker)? I'm guessing that it would take about 20 or 30 minutes to do the test. Any hints here? Thanks. |
After installing the comp gauge into the plug hole (make sure you don't take both plugs out - duh) disable the ignition and the fuel ... have someone turn the car over. You will want to see 3 consitent compression pulses. If there is one high reading on the gauge... then two (significantly) lower readings... there is a bad seal. You'll get a feel for it once you watch the gauge for a few cycles.
Just look (and listen) for 3 equal compressions. |
Don't forget that car parts start to break between 70k-85k so sometimes a low mileage car isn't always the best deal considering that it costs more. At $60k, it's due for a $400 maintenance too.
If it's a good deal, check all the mechanic parts and fluids. Have fun shopping! |
Mine blew at 48k :(
DO a compression check on it. |
I'd do a compression test on a car that had 20k on it. You never know with a rotary and you never know how the last owner REALLY drove and maintained that car.
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