Low compression

zmnewzealand, Sep 18, 10:32am

compression on 3 cylinders within 8 psi dry and same pressure wet then 1 with 30psi less, would you say engines toast? cheers

franc123, Sep 18, 10:44am

What engine are we testing first?

zmnewzealand, Sep 18, 10:58am

mazda z5 had idle mis thought it was ignition related. cheers

phillip.weston, Sep 18, 12:09pm

what is the actual compression readings?

elect70, Sep 18, 12:35pm

Definately needs the head off for 30 psi below . gasket gone or valve burnt .

zmnewzealand, Sep 18, 12:53pm

#1 dry-168 wet-175 . #2 dry-160 wet-175 . #3 dry 162 wet-175 . #4 dry 135 wet- 150. cheers

zmnewzealand, Jun 12, 4:39am

Just kind of did a leakdown test with the compression tester putting 30 psi into the cylinder, can clearly hear leaking from oil filller cap so I guess rings are shot. Cheers

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