Question about 1993 Subaru Legacy

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Knocking in the engine


I have just got my car back from the local mechanic trying to fix a knocking noise in the engine. It only happens when I am going 30-40km/h and accelerating uphill. It sounds like a tap tap tap noise. He curses Subaru's and cannot work it out. This is not a turbo but a 2.2 brighten.

He seems to think it was a loose spark plug so he replaced them all. But it still knocks. That might have been another problem, it used to drop a cycinder some times

Do you have any idea so I can tell my mechanic where to look?



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  • paulschwarz Sep 18, 2008

    Not a deep hard knock, I can hear it when I drive of course so i'd say on the lighter side. Yes I use the correct fuel.


  • paulschwarz Sep 18, 2008

    Well I don't thrash the car especially now there is a noise in the engine. Never have really, I live on an island and the fastest I go is 80 km/h.

    No there is not an oil pressure gauge.

    What might be causing the lack of pressure?

    Cheers for being so fast in your response. I appreciate it.


  • Steven Brock May 11, 2010

    knocking sound, you mean a light tick tick tick under load or a deep hard knock?



3 Answers

I will talk to hom tomorrow

Posted on Sep 18, 2008

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The light ticking sound tells me it's with the vavle train. Could be a number of things. Something simple as not enough oil getting to valves or harder like worn valve springs or low oil pressure. If you haven't been hot roddin your car, odds are it's just not getting enough oil. Do you have an oil pressure gauge in your vechile? If so, what dose it read at idle?

Posted on Sep 18, 2008

  • Steven Brock Sep 18, 2008

    Well, could be wrong oil weight or oil pump wearing out. My first suggestion is next oil change, change oil weights. If that dosn't solve it, take it in and talk about oil pump replacement. Make sure to get his input on this problem.


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Are you using the right octang of gas.

Posted on Sep 18, 2008

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