Compression Test Question

**carlogt** · October 29th, 2008 01:46 PM

mga fellow tsikoteers. san po recommended nyo na compression test shop? may idea ba kayo magkano yun at gaano katagal?

**ghosthunter** · October 29th, 2008 02:26 PM

Originally Posted by carlogt

mga fellow tsikoteers. san po recommended nyo na compression test shop? may idea ba kayo magkano yun at gaano katagal?

SPEEDLAB (http://www.speedlab.com)

No idea on price. It should take less than 30 minutes if there is a mechanic free to do it right away.

**technismo** · October 29th, 2008 02:30 PM

sir kahit saan po yan... basta alam po ng technician yung specification ng engine nyo po... bwat cylinder ang pag test nyan.. tinatangal po yung sparkplug dahil dun po ikakabit... tnx

**bambino** · October 29th, 2008 10:11 PM

meron na rin electronic compression test

kung equipped yung shop nito they don't have to remove the spark plugs

tests will be done from the battery readings

the time to do it is less than five minutes only

**carlogt** · October 30th, 2008 10:02 AM

wow.ayus a.5 mins. mga fellow tsikoteers salamat sa mga reply nyo.maasahan tlga dto.

**speedyfix** · November 16th, 2008 12:15 PM

how do you check the individual cylinders compression through the battery? impossible ata yun. all you can check via the battery is the charging of your alternator.

**niky** · November 16th, 2008 11:21 PM

What the hell is an electronic compression test? You can only check compression by putting a pressure sensor inside the cylinder.

**bambino** · November 17th, 2008 11:40 AM

Originally Posted by speedyfix

how do you check the individual cylinders compression through the battery? impossible ata yun. all you can check via the battery is the charging of your alternator.

to introduce , i operate a specialty shop here in canada catering independent garages

i specialize in driveability problems on most makes and models

i also specialize in auto electrical ,A/C , and alternator and starter rebuilding .

your questions will be answered if you have this equipment or if you know somebody who has one

this is my main tool when it comes to diagnosing most of vehicle's troubles.

it's called PICOSCOPE , you won't believe if you have'nt done it .

i wish i can show it to you .

you can visit PICOSCOPE .COM to know more .

this machine is also capable of testing the ff:

precise misfire diagnosis of all gas and diesel engines
engine blowbys
valve trains , timing systems, fuel ,ignition

and alot more , and you don't have to touch the engine

that 's how technology has gone so far

the answer to your question is this.

set the machine to "RELATIVE COMPRESSION MENU "
DISABLE THE FUEL SYSTEMS
HOOK-UP THE IGN PICK AT PLUGWIRE #1 ( COIL ON PLUG USE THE AMP PROBE)
HOOK UP 600A CLAMP TO NEG BATT CABLE
CRANK THE ENGINE AND SAVE THE DATA

**niky** · November 17th, 2008 01:01 PM

Ah. I get it. It checks starter power usage to check which cylinders are "harder" to crank, and infers relative compression from that. So it's not an actual compression test... just a comparison. (Shrug)... probably okay... not as informative as a full compression test (which would show you if all cylinders are low) or a leakdown... but relative compression is actually what you're usually looking at when performing this test, anyway.