barriesheene Posted October 26, 2011 Share Posted October 26, 2011 Hi guys. If got what sounds like a blowing exhaust on my disco, ( '95 V8 ). I've changed the downpipe gasket and manifold gasket and it hasnt changed at all. There are no signs of cracks or leaks. Any idea's ? it's the drivers side bank. Thanks in advance, Baz Quote Link to comment Share on other sites More sharing options...
ballcock Posted October 26, 2011 Share Posted October 26, 2011 Try having some one hold a rag into the outlet whilst your looking this should make it more obvious. I had a head gasket gone on mine which sounded like exhaut blow. Quote Link to comment Share on other sites More sharing options...
teabag Posted October 27, 2011 Share Posted October 27, 2011 When my manifold to down pipe gasket leaked it sounded like a machine gun when underload, going up hills etc. I couldn't see a leak but the garage could, and that was the drivers side, so 6 months later when they replaced the auto fluid and had to drop the Y pipe they also had replace the gaskets. Job done Quote Link to comment Share on other sites More sharing options...
barriesheene Posted November 9, 2011 Author Share Posted November 9, 2011 Hi, guys. Sorry its been awhile I'm upto my eyes at the moment. UPDATE. Had new stainless exhaust fitted from y piece back. Gaskets changed ,( down pipe and manifold ). It is a machine gun sound which is what made me suspect gaskets but I cant seem to find the leak !. It is down on power tho and I pressure tested the bank of cylinders and the one closest to the bulkhead was reading 80/100 psi while the other three were all showing 150psi. Can the head gasket go from cylinder - out if there are no other symptoms ? No loss of water, never overheats, no signs of water in oil or vice versa. Dont want to get head done if no need but why would I be down on compression in just 1 cylinder ?? Please help. Quote Link to comment Share on other sites More sharing options...
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