Has anybody used this make of compression tester

[Penelope Stopit]

This tool won't be used often unless I make a proper cats ass of the engine work I'm doing
It looks cheap and cheerful to me but?
https://www.ebay.co.uk/itm/AUTOMOTIVE-PETROL-ENGIN...

[stevieturbo]

They'll all be cheap chinese crap anyway.

If they seal and give readings....what more do you need ?

Or better get a Picoscope and in cylinder pressure transducer so you can take readings from a running engine

[Penelope Stopit]

Ok, me learning to use a Picoscope would be like a Prostitute learning to use a Multimeter plus this is hopefully a one off test on an out of vehicle engine

[227bhp]

^ This. It doesn't have a makers name to be comparing anyhow....
As long as it gives repetitive results it'll be ok, it's not a highly precise test anyhow.

[Penelope Stopit]

227bhp said:

^ This. It doesn't have a makers name to be comparing anyhow....
As long as it gives repetitive results it'll be ok, it's not a highly precise test anyhow.

Stupid me, I didn't even consider there was no ID on it

That,s it then, you have both convinced me to order it as it will work

Thanks, have a good day

[Steve_D]

Absolute accuracy is not relevant in this test as in most cases you don't know what the reading should be anyway.
What you are after is looking for a difference in pressure from cylinder to cylinder.
Don't forget to have the throttle open whilst doing the test.

You may also want to consider a 'leakdown' tester as an alternative or addition.


It will detect a duff cylinder but offer some answers as to why it is duff.
Brief description is you use it with an airline and blow air into the cylinder and record how much resistance there is to the airflow but better still you can listen for where the leak is....listen at the following points on the engine.
Oil filler = piston rings, possibly head-gasket
Exhaust = exhaust valve
Throttle = inlet valve
Waterway or rad cap (if engine in car Bubbles in water) = head-gasket, slipped/cracked liner

Steve

[Penelope Stopit]

Steve_D

Thank you very much for the information, if needed I can make something up to achieve that leakage test with the gauge from the compression tester or a n other that a friend may have lying around

Have a good day

[tapkaJohnD]

Aaaaaaaaaaaaaaaaaaaaaaaargh! Kit in a Red Box!
Red in Chonese culture signifies Good Luck, and ye gods do you need it.

See: http://sideways-technologies.co.uk/forums/index.ph... for an appreciatin of exactly the same kit. Quote, " I paid less than 10 quid. If I throw away all the rubbish parts I will have nothing left."

John

[Penelope Stopit]

tapkaJohnD said:

Aaaaaaaaaaaaaaaaaaaaaaaargh! Kit in a Red Box!
Red in Chonese culture signifies Good Luck, and ye gods do you need it.

See: http://sideways-technologies.co.uk/forums/index.ph... for an appreciatin of exactly the same kit. Quote, " I paid less than 10 quid. If I throw away all the rubbish parts I will have nothing left."

John

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I paid less than 10 quid. If I throw away all the rubbish parts I will have nothing left.

Just read the text on the box again; second line..

The check valve is crap. the second time I looked at the gauge and recorded the peak as the peak is higher than the stored reading.

I will see if I can check the gauge tomorrow, but in any case, I have a delta between cylinders, which is not good.

Still got my celestial flow meter and compressor to test. That came in a nice red bubble box too

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Thanks for the confidence booster

Edited by Penelope Stopit on Monday 11th June 07:50