Tbone77

So, I'm about to buy an 04 Rio, and I asked the dealer to have the compression checked for me. Here are the numbers:

1- 196
2- 174
3- 203
4- 203

From what I've read isn't the 174 a sign that cyl 2 has some slight damage, or is that acceptable? I'm really wanting this car, but if the engine is not performing fully, or going bad, I don't want to buy a headache.

Should I have them do a leakdown?

Buy the car or no? What do you think?

s2khondas

is it stock??? seems a little low to me, my compression was 186 all the way around with 3mm headgasket, i dont kow if that makes a difference but ill let others chime in just my .2

2poor2mod

seems a little low and the difference between the two cylinders seems a bit extreme, but i will let the experts chime in

s2k dre

seems low for 11.1 comp! i wouldnt buy it, but thats just me.

Tbone77

Yes, it's stock, and it has 34xxx miles.

street_ruler

thats too much variance between the cylinders. now keep in mind that the higher the compression the widre the numbers can vary and it would still be somehting liek a valve lash adjustment needed.

id say that cyl 1 is a valve lash adjustment but cyl 2 is some what alarming. do a wet compression test and see what happens.

street_ruler

just re read the post...

dont buy that car. wait for a good one dude. trust me its well worth the extra few days it would take to find a great one.

iam7head

the compression number looks fine except it varies too much.

I am surprise they didnt do a wet test on the low number cylinder(or they just didn't tell you)

i will not buy it based on that

rob!

deffinately seems low. mine were close to 210 with a 3mm headgasket. i would imagine stock it would be atleast 230-240. There is also way too much variation between all the cylinders. the closer they are together the better it is.i would pass on it for sure.

jyeung528

that's a hell no.