i have a 90 maxima with the vg30e, it has about 90k miles on it.
when i drive it makes a wierd ticking *sounds like valves to me* its only from 2500 to about 3200 rpms, im not really sure if its the oil pressure or anything like that yet. can anyone help me out? THANKS
top end ticking, need help
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MinisterofDOOM
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Re: top end ticking, need help (sr20daze)
The VG30E had a very common problem with exhaust manifold studs failing--which would lead to an audible exhaust leak. Cars with bad exhaust manifold seals will tick pretty loudly. Sometimes the ticking will disappear once the car warms up and components expand with heat, sealing the gap again. I'd say that's probably what you're hearing.
It's essentially harmless.My car has 250,000 miles on it and has probably had the problem since 60k miles. Since the studs require so much labor to replace, I've just left it alone.
It's essentially harmless.My car has 250,000 miles on it and has probably had the problem since 60k miles. Since the studs require so much labor to replace, I've just left it alone.
Re: top end ticking, need help (MinisterofDOOM)
thanks doom. one or 2 of the studs heads snapped. but im not sure it sounds like my valve are doing the noise or something, its hard to explain. if only i could get it on a video clip to explain
its defiantly the exhaust if the studs have snapped, the vg30 manifolds were designed with the rear to ports molded together and the front one by its self, the front one heats up and twits, making it not seat flush agents the head. when this happens the car will make what sounds like a tapping noise that seems to come from within the valve cover. my 94 D21 suffered from this problem, it can be temporarily fixed with new studs and a new exhaust manifold gasket or permanently with headers. fyi a new manifold will do the same thing, (waste of money)
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mtcookson
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I agree that it is the studs as well. I do recommend to replace them if at all possible as the exhaust leaking will hurt your fuel economy however if you can't do it yourself it could be an expensive fix. If any of the studs broke off deep it could require getting them drilled which is an absolute pain.
I actually had a 91 GXE that was fine then one day started whistling. Sounded just like a turbo but faint. I even fooled a performance guy that does a lot of turbo setups. Drove off and he thought it was turbocharged. It eventually warped some more and did its normal tapping/putting noise which ended the fun.
I actually had a 91 GXE that was fine then one day started whistling. Sounded just like a turbo but faint. I even fooled a performance guy that does a lot of turbo setups. Drove off and he thought it was turbocharged. It eventually warped some more and did its normal tapping/putting noise which ended the fun.
Re: (mtcookson)
haha i do have that same turbo wanna be sound lol. i have to re drill them, im not sure how many they are. i guess i will find out when i drop the engine and check it all out.
thanks
thanks
Re: (krdk)
ok haha
umm by any chance do any of you know where i should get the studs? i would love upgraded ones, if not i can go with stock replacement
umm by any chance do any of you know where i should get the studs? i would love upgraded ones, if not i can go with stock replacement
Re: (sr20daze)
i pulled mine out of the junkyard
Re: (krdk)
thats what imma do i guess, i dont wanna spend money on it for now....... thanks for the help
Re: (sr20daze)
Hey did you fix your issue?
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