Engine compression

This topic contains 2 replies, has 2 voices, and was last updated by michael swankhouse michael swankhouse 2 years, 8 months ago.

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  • #769
    michael swankhouse
    michael swankhouse
    Participant

    So I did compression tests on my RRC today.  #1 90 PSI and #2-8 run 112PSI to 125PSI.
    The engine is weak and when it idles (now that I have the exhaust fixed) I can hear a air leak sound on the driver’s side of the engine at idle.  I’m wondering if the front of the #1 cylinder head gasket is leaking.

     

    Everything I’m seeing from other people’s posts on the net say 170-200PSI on a test.  Looks like I’m low all around.  The odo shows 250k+ miles.  I imagine I’ve got a tired oil pump, oval cylinders, worn rings, tired valves, and a bad head gasket at this point.  🙂

     

    Thoughts?  I’m thinking I’m looking at a full rebuild.

    #786
    MaddMatt
    MaddMatt
    Participant

    I’m certainly no expert – but replying anyway – trying to make this forum more of a thing…

    Sounds like head gaskets to me – have you ever taken it to JC British? I took the Disco there last week, not cheap, but I got a pretty good feeling about the place and the people – and a bit less expensive than the dealer. They also seem to have genuine interest in working on older trucks, vs feeling like they’d rather be doing oil changes on Evoques….

    #792
    michael swankhouse
    michael swankhouse
    Participant

    I’ve not taken it to a shop yet.  Seeing that 7 of 8 cylinders are all around 120PSI and #1 is 90PSI it tells me this engine is just worn out.

     

    My dilema now is rebuild this one or swap a Chevy V8 into it.   I’ve been doing my own wrenching on my project vehicles for quite a few years now.  I’ll tackle this one too.

     

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