Compression Test Results... Good??
#1
Compression Test Results... Good??
So I am looking at a 2002 Disco II w/ 107k. Looks like drive shaft has been updated (grease fittings visible) and body is straight. Otherwise it's a little rough, especially inside. Anyway I understand Head Gaskets are an issue on these so I went ahead and ran compression test. Most checked out around 160-170 but 3,2 and 6 were more like 130. According to OBDII it is missing on 5 and 8 but both of these spec'ed out fine. So what do you think, is this a reasonable set of data?
BTW-no white smoke from exhaust and I ran a chemical test on coolant tank which indicated no presence of exhaust fumes in coolant.
Also brakes barely work, pedal sinks to floor and applies force to pads only once it has bottomed out, then there is some stopping power but not much.
Owner agreed to sell truck for $1500 btw... Good deal or no?
BTW-no white smoke from exhaust and I ran a chemical test on coolant tank which indicated no presence of exhaust fumes in coolant.
Also brakes barely work, pedal sinks to floor and applies force to pads only once it has bottomed out, then there is some stopping power but not much.
Owner agreed to sell truck for $1500 btw... Good deal or no?
#2
Join Date: Apr 2006
Location: Denver, Colorado
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Did you do the compression test with all 8 plugs out and the t/body wedged open, if not your result are not accurate. You might want to do it again along with a wet compression test to see if 3,2 and 6 comes up.
If the compression does not average out better, I would start looking for another truck.
If the compression does not average out better, I would start looking for another truck.
#3
#4
Oh and no, I did not open the TB but did remove all plugs. Since TB was not open, should I expect actual readings to be higher?
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#9
Thanks for all the input guys, really helpful! So I think I have decided to go buy the thing today... all indications are that the big/important pieces are there, just need to do a tune-up and some odds and ends.
So I've noticed that you are all crazy about replacing these head gaskets. Like, if there is anything wrong, replace gaskets! Do they really go bad THAT often? Easy job on these? Did the gasket on my 944 turbo a while back and it all come to like $1500 in parts alone and was a pretty big job, but there is a lot less room to work in those and a lot of hoses/pipes in the way.
So I've noticed that you are all crazy about replacing these head gaskets. Like, if there is anything wrong, replace gaskets! Do they really go bad THAT often? Easy job on these? Did the gasket on my 944 turbo a while back and it all come to like $1500 in parts alone and was a pretty big job, but there is a lot less room to work in those and a lot of hoses/pipes in the way.
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