low compression
#1
Tested my 03 3.5 max out and I was in the 140 psi range around where the book says is the minimum .I have 16th on her what r u guys running for compression?
Oops meant to say I have 160,000 miles
Oops meant to say I have 160,000 miles
Last edited by NmexMAX; 03-19-2015 at 08:01 AM.
#2
Standard:
1,275 kPa (13.0 kg/cm2, 185 psi)/300 rpm
Minimum:
981 kPa (10.0 kg/cm2, 142 psi)/300 rpm
Difference between each cylinder:
98 kPa (1.0 kg/cm2, 14 psi)/300 rpm
NG (NO GOOD) => Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
http://www.nicoclub.com/FSM/Maxima/2002/EC.pdf
Engine replacement time since engine rebuild's so $$$$$$$
1,275 kPa (13.0 kg/cm2, 185 psi)/300 rpm
Minimum:
981 kPa (10.0 kg/cm2, 142 psi)/300 rpm
Difference between each cylinder:
98 kPa (1.0 kg/cm2, 14 psi)/300 rpm
NG (NO GOOD) => Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
http://www.nicoclub.com/FSM/Maxima/2002/EC.pdf
Engine replacement time since engine rebuild's so $$$$$$$
Last edited by george__; 03-19-2015 at 06:24 AM.
#4
fouled plug
So today Check engine started flashing.and was misfiring real bad barely got home. Cylinder 2 . Unplugged coil stayed the same. Swapped coil from a known good cylinder stayed the same. Did a compression test 142 psi with a crappy harbor freight gauge. Pulled the plug it was soaked.hit it with a propane torch put it back in and it runs fine now. It's been a year since I put new oem plugs in.any idea as to what's goin on with this max?
#6
So today Check engine started flashing.and was misfiring real bad barely got home. Cylinder 2 . Unplugged coil stayed the same. Swapped coil from a known good cylinder stayed the same. Did a compression test 142 psi with a crappy harbor freight gauge. Pulled the plug it was soaked.hit it with a propane torch put it back in and it runs fine now. It's been a year since I put new oem plugs in.any idea as to what's goin on with this max?
#7
coolant
Car also seems to turn coolant dirty. Gets oily residue in the overflow tank. Also heat won't work at idle only when slightly revved and I bled the system really well. There is no coolant in oil and it uses some oil. Anyone point me in the right direction. Don't wanna.pull motor if this one can be salvaged
#8
Low compression,oil on plugs,misfire,coolant mixing up oil,early signs of a headgasket,yeah that motor is waving bye-bye,sooner or later you keep driving it the car will smoke and you will end up with a multiple misfire p300 code. The plug was soaked with oil right?
Last edited by vqmaxman; 04-06-2015 at 02:08 PM.
#10
Did you abuse it,low on oil?
ran it hot?
The hg jobs might be too involved and expensive...if i was you i would just slap the car with a 07altima 3.5 engine. Or just replace it with another lower mileage vq.
#11
It runs shifty lately and check engine light flashes seems better when it warms up fully. Also I raced my friends rx8 and still beat him. So it seems like just fix in this misfire will let me run it another year at least.
#12
Car also seems to turn coolant dirty. Gets oily residue in the overflow tank. Also heat won't work at idle only when slightly revved and I bled the system really well. There is no coolant in oil and it uses some oil. Anyone point me in the right direction. Don't wanna.pull motor if this one can be salvaged
#13
Ok, to confirm a headgasket check your dipstick check for the oil to look dirty milk chocolate color and it should stink the coolant mixing in and another sign your car drinks coolant and blows white smoke out the tailpipe. If you noticed a cracked head gasket can also cause the car to misfire,mixing in with combustion. The question is the car mixing at the dipstick and blowing white smoke?
#15
May just say screw this motor.found a 2007 maxima 3.5 engine with 65k on it for $230. Been reading these are the most desirable engines to swap in.guess the piston ring issues r now resolved. Is the 6.5 gen 2007-2008? Can the precat be used from this year or do they still break down like my 5.5 gen?
#16
May just say screw this motor.found a 2007 maxima 3.5 engine with 65k on it for $230. Been reading these are the most desirable engines to swap in.guess the piston ring issues r now resolved. Is the 6.5 gen 2007-2008? Can the precat be used from this year or do they still break down like my 5.5 gen?
#17
Thread
Thread Starter
Forum
Replies
Last Post
litch
4th Generation Maxima (1995-1999)
123
01-04-2024 07:01 PM