Compression Test
04-18-2005, 11:55 AM
#2
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Vehicle: Elantra HD / 2007
Quick glance at webtech:
Standard value [at 250-400rpm] 14.5kg/cm2 (1.47Mpa, 213psi)
Limit 13kg/cm2 (1.37Mpa, 199psi)
Max. difference between cylinders 1.0 kg/cm2 (100kpa, 14psi)
I guess for turbo charged engine standart value is lower (12 kg/cm2 - due to lower compression ratio).
Standard value [at 250-400rpm] 14.5kg/cm2 (1.47Mpa, 213psi)
Limit 13kg/cm2 (1.37Mpa, 199psi)
Max. difference between cylinders 1.0 kg/cm2 (100kpa, 14psi)
I guess for turbo charged engine standart value is lower (12 kg/cm2 - due to lower compression ratio).
04-18-2005, 12:57 PM
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well mine right now are as followed
1. 177
2. 176
3. 154( it went down to 124 then i retested and it went to 154 i think i have a stuck hla cuz it ticks bad)
4. 179
hmmm my engines gettin tired (138000 miles)
on cyl 3 it went down to 124 then i retested and it went to 154 i think i have a stuck hla cuz it ticks and ive ran seafoam through twice and it still ticks
boo hoo no nitrous on this engine
1. 177
2. 176
3. 154( it went down to 124 then i retested and it went to 154 i think i have a stuck hla cuz it ticks bad)
4. 179
hmmm my engines gettin tired (138000 miles)
on cyl 3 it went down to 124 then i retested and it went to 154 i think i have a stuck hla cuz it ticks and ive ran seafoam through twice and it still ticks
boo hoo no nitrous on this engine
04-18-2005, 02:12 PM
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Vehicle: 2000 Elantra
with a compression test guage tongue.gif
you pull out the spark plugs disconnect the ignition pack and install the guage and crank the car over a few times
you pull out the spark plugs disconnect the ignition pack and install the guage and crank the car over a few times
04-18-2005, 02:16 PM
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Vehicle: Elantra HD / 2007
04-19-2005, 12:56 AM
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hmmm would hla's throw off the compression?
the car runs strong and were i hit 154 is were i think the lifters are goin flat
when i raced abqelantra in his 04 i beat him everytime except when i missed 2nd (at the track)
and the only thing extra i had was less weight and a flywheel
he had less milage and cvvt
it idles pretty good (when the subs are off) and ive never had the head off of it
it doesnt really burn oil i think it burnt around half a quart last oil change
and not once has it overheated EVER and i dont smell antifreeze
still has the factory thermostat, factory hoses, factory drive belts cam and crank seals are still the same
i think the only engine thing ive ever done (other than mods) was i had the timing belt replaced around 85k and im at 138 now
most used engines i am lookin at say around 160
wait i just looked at webtech i did the test with the throttle closed maybe i should redo it
the car runs strong and were i hit 154 is were i think the lifters are goin flat
when i raced abqelantra in his 04 i beat him everytime except when i missed 2nd (at the track)
and the only thing extra i had was less weight and a flywheel
he had less milage and cvvt
it idles pretty good (when the subs are off) and ive never had the head off of it
it doesnt really burn oil i think it burnt around half a quart last oil change
and not once has it overheated EVER and i dont smell antifreeze
still has the factory thermostat, factory hoses, factory drive belts cam and crank seals are still the same
i think the only engine thing ive ever done (other than mods) was i had the timing belt replaced around 85k and im at 138 now
most used engines i am lookin at say around 160
wait i just looked at webtech i did the test with the throttle closed maybe i should redo it
04-19-2005, 08:31 AM
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Yes, you should redo.
You should check compression pressure with wide open throttle.
If you have low compression - add oil through the spark plug hole (a bit) and check compression on that cylinder again, if it goes up - problem with piston rings, if no - valves, head gasket.
You should check compression pressure with wide open throttle.
If you have low compression - add oil through the spark plug hole (a bit) and check compression on that cylinder again, if it goes up - problem with piston rings, if no - valves, head gasket.