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 Post subject: compression test
Posted: Fri Jan 16, 2009 3:00 pm 
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Done some looking around couldnt find the info i was after

did a test on my car and all the cylinders came back at 180. thats pretty good from what i can tell (all being equal and such)

is 180 ok for a car that hasnt had the head off or shaved?

 

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Posted: Fri Jan 16, 2009 3:14 pm 
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yer dude thats pretty damn good compression

they all need to be within 10% of each other

so yer nice!

 

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Posted: Fri Jan 16, 2009 3:27 pm 
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BAHHHHH! i want to find something irregular in my car! i hate this f**k thing! whats the problem!!!!!!!!!

 

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Posted: Fri Jan 16, 2009 5:23 pm 
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What problem?
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Posted: Fri Jan 16, 2009 5:24 pm 
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Do a leakdown test :wink:
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Posted: Fri Jan 16, 2009 7:00 pm 
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yes waht problem

 

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Posted: Fri Jan 16, 2009 10:18 pm 
Getting Side Ways
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crap idle, low power and hesitates when you first start the car.

and whats a leak down test?

 

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Posted: Fri Jan 16, 2009 11:01 pm 
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fiftyone wrote:
crap idle, low power and hesitates when you first start the car.

and whats a leak down test?


does the idle change when warm? theres so many areas... fuel delivery, timing, ignition spark (plugs, leads, coil pack), O2 sensor, blockages to cat or filters. go through each one until you find the culprit.

good news is your internals are spot on :)

+1 for whats a leakdown test.

 

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Posted: Fri Jan 16, 2009 11:12 pm 
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idle doesnt change, all of those things either checked or replaced

fuel pump next on the chopping block

 

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Posted: Sat Jan 17, 2009 1:08 am 
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LEAKDOWN TEST


all there for u numnuts :lol:

 

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Posted: Sat Jan 17, 2009 2:24 am 
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fiftyone wrote:
crap idle, low power and hesitates when you first start the car.

and whats a leak down test?


sounds like timing is up the s**t.
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 Post subject: Leakdown Test
Posted: Sat Jan 17, 2009 7:47 am 
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Disco Frank wrote:
LEAKDOWN TEST


all there for u numnuts :lol:


The 'Leakdown Test' would appear to be the same as what the Aero Industry refers to as a 'Differential Compression Test'. If you know a LAME you have access to the equipment required or you can make one up (if you can access a compressor) as I did when I was teaching AME Apprentices and ran a 'clinic' so they could do their own rides. The main pro is that you know exactly where your donk is losing compression.

 

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Posted: Sat Jan 17, 2009 11:24 am 
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Disco Frank wrote:
LEAKDOWN TEST


all there for u numnuts :lol:


lol, frank, you just searched wiki. I assume you didnt know either?

 

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Posted: Sat Jan 17, 2009 12:00 pm 
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Grimketel wrote:
Disco Frank wrote:
LEAKDOWN TEST


all there for u numnuts :lol:


lol, frank, you just searched wiki. I assume you didnt know either?


He knows. Prob just a f**k easier to paste a link than type the explanation out.
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Posted: Sat Jan 17, 2009 3:19 pm 
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arm79 wrote:
fiftyone wrote:
crap idle, low power and hesitates when you first start the car.

and whats a leak down test?


sounds like timing is up the s**t.


but if its timing, why would the engine only hesitate when its first started?

 

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