Compression test results

[Francob]

Opinions on the following results please;

69 66 69 / 61 57 58 - all in PSI

Half bridge engine under 1500 miles.

 

[Mir]

Get a proper compression test done mate. PSI could mean anything.

Cheers
Mir

 

[Francob]

Get a proper compression test done mate. PSI could mean anything.

Cheers
Mir

What this tester isn’t a proper one ?

 

[Spendyrx]

Oof theyre low results. Though i have heard that low results always happen after a rebuild. Get about 5k in and have another go at it! Write them results down and compare at 5k

 

[Spendyrx]

Im guessing the lower no.s are rear rotor right?

 

[Jit]

Those are a touch low tbh. They’re usually a little low after a rebuild until fully run in but shouldn’t be that low tbh.

 

[Francob]

Im guessing the lower no.s are rear rotor right?

Yea that’s right, how can you tell ?

 

[Mir]

What this tester isn’t a proper one ?

View attachment 25015View attachment 25016

I was more talking about genuine mazda compression tester mate. I know, many people use these testers, however, for me, genuine mazda compression tester's results are reliable.

It may be a personal choice!

Cheers
Mir

 

[Francob]

I was more talking about genuine mazda compression tester mate. I know, many people use these testers, however, for me, genuine mazda compression tester's results are reliable.

It may be a personal choice!

Cheers
Mir

Where can I get one ? Mazda direct ?

 

[Mir]

Where can I get one ? Mazda direct ?

There are guys, probably on this forum, who can come to you and do a compression test for you - largely depends on location thou!

If you are near London or Essex sometime soon, let me know, I will ask someone who has a genuine compression tester, he will probably charge you (not alot) for traveling to you and for doing a compression test - I honestly don't know, how much...

Cheers
Mir

 

[jdmr_neil]

Those are low, but as already said you need to get some more miles in it first.

It will take 1-2k to get everything settled for s reliable comp test

Mine was in the 60s psi when it eventually let go which is in the mid 4 bar range

 

[Francob]

Thanks all.

 

[JoeLanger]

Get a proper compression test done mate. PSI could mean anything.

Cheers
Mir

Yes PSI could mean anything. Like 60psi x 14.5 = 4 bar

As already mentioned if the cars isn't having any problems I'd suspect a low reading from the tester

 

[Satoshi-FD3]

Opinions on the following results please;

69 66 69 / 61 57 58 - all in PSI

Half bridge engine under 1500 miles.

Did you normalise the results using the online tool?

The numbers are considerably low was their a good seal on your pressure sensor?

 

[Francob]

Did you normalise the results using the online tool?

The numbers are considerably low was their a good seal on your pressure sensor?

You got a link to the tool ?

 

[Satoshi-FD3]

You got a link to the tool ?

I certainly do.. Twisted Rotor's Online tool.