95max327

iTrader: (-1)

cyl 5 failed the compression test. its only at 60PSI WTF is wrong with my maxima

whlimi

iTrader: (11)

Did you try adding a bit of oil through the spark plug hole to see if compression rises? What's the compression like on cylinder 3?

A leak down test will tell you where you're losing the compression.

95max327

iTrader: (-1)

i havent any idea what a leakdown test is or how to perform it. i also did not add oil into the cyl. i actually didnt do the test a friend of mine did, but no oil wasnt added and i do own the compression tester i bought it today so if anyone has info on how to perform the test ill do it myself and get info posted up here for further actions to be taken on the car cause i need my baby for transportation to and from work/school

whlimi

iTrader: (11)

Per fsm:



Do a search for leak down test procedure. It's more involved.

95max327

iTrader: (-1)

well the idiot that compression test'd my car started it and only pulled one plug. so im going to re do the test and see what i get for a reading and let you guys know!

f550maranello2

iTrader: (2)

if you put oil in the cylinder and compression is good then rings or possibly valve seals are the problem..


if oil doesnt help u have a burnt valve... or the dumbfawk is doing something wrong...

raziq_afg

people usually dont pay attention that much to this, but make sure to have the throttle wide open other wise your numbers are gonna be low. do the wet compression test and if nothing changes then go on from there.

pmohr

iTrader: (26)

Indeed. Not to mention actually removing all of the plugs, and not doing it while the engine's running, as the OP's guy did. That and I always put it on a battery charger.

95max327

iTrader: (-1)

my main problem is the car is misfiring, the coil isnt the problem and the injector was checked and ok supposively, im going to check it next nice day (i live in connecticut) its been ****ty out with rain/ice/snow but tomorrow should be like 37 degrees so ill check into it and see what i pull up for numbers and every cyl and let you all know! im going to do just the dry test unless numbers are low then ill do wet test aswell