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#11
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#12
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Here's hoping!! Sent from my SM-A730F using Tapatalk
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"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course |
#13
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Sounds like you need to fully remove the intake manifold at a minimum. At that point, things may become more clear.
A leakdown test should pinpoint where the problems are. Definitely figure out exactly what caused this before repairing if you want to make sure you don't re-do it all later. Sounds like a major problem since you had both intake and exhaust damage. Complete guessing at this point, but maybe a stuck injector filled the cylinder, hydrolock cracked the head, and boom, exploding into both intake and exhaust.
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2001 X5 3.0i, 203k miles, AT, owned since 2014 |
#14
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A local shop pulled my intake manifold and replaced it with the one I pulled out of another X5. Note that the manifold I pulled included all the fuel injectors. During the replacement process they noticed that the crank case ventilation valve was clogged. So they cleaned it out. The car started fine and now runs great. It turns out there wasn't any exhaust problems, all the noise was coming from the intake. So the question is, can a clogged ventilation valve cause the backfire or was the problem fixed by replacing all the fuel injectors? I have the original manifold and I'm going to check out the injectors.
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#15
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I would have a compression test done on the engine and if you have a cylinder(s) with low compression I would have a cylinder leak down test perform on that cylinder(s).
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD |
#16
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Thanks upallnight, I'll do a compression test tomorrow.
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#17
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I would also do a fuel pressure check both running and after shutting it off.
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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas |
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