My J30T Sounds like a diesel engine......

[J30T_]

My J30t sounds like a diesel engine I know I need an exhaust gasket do you know if that is the reason?? Also I have a miss fire what could that be?? Is it normal for a j30t to shift hard?? there is no slipping you just feel it shift?

Thanks for the help and sorry about all the questions...im just a newbie

[95-J30tt]

how does it sound exactly, is the noise comming from the engine (internal sounds) like detonation for example?....... or is it an external sound (exhaust system has holes)

for the misfire, do a power balance test, turn on your engine, let it idle, then remove one spark plug wire at a time, untill you find one that doesnt change the idle (idle should drop slightly when you remove each plug wire)

shifting hard could be your TPS sensor (the small black box with 2 wires coming out of it, on the driver side throttle intake), have you changed it or adjusted it lately?, if it is not adjusted properly, it could cause the transmission to shift harsh and only at high (3000 and above) rpm (if you are driving it normally, the transmission should switch gears at around 2500 rpm, if it is doing that, dont readjust the TPS)

[J30T_]

Well its comming from the engine but someone told me I need an exhaust gasket..I never heard of that ......is that a real part????? Well my car is shifting around 2800rpms ...I am taking it to my mechanic today but you know even tho he is a friend of the family you still cant trust him.......with the miss fire the engine jumps a little to....what I mean is if you open the hood you can actually see my engine jump a little....is that normal???

Thanks for you help

[yodawill2000]

no ..When running properly you can barely tell its running from inside at idle.You have a missfire for some reason.

[drape123]

My J30t sounds like a diesel engine I know I need an exhaust gasket do you know if that is the reason?? Also I have a miss fire what could that be?? Is it normal for a j30t to shift hard?? there is no slipping you just feel it shift?

Thanks for the help and sorry about all the questions...im just a newbie

check spark plugs, this happened with my j30 when a bosch spark plug actually broke inside the cylinder and caused it to misfire.

check condition and get new plugs, they are only $1.99 each

[J30T_]

I toke it to a mechanic and he said that it is my transitor unit is this possible?????????????????????????

[gr8scott72]

I toke it to a mechanic and he said that it is my transitor unit is this possible?????????????????????????

Get him to show you what part he is talking about.

[elan]

drape, come on they are no way 1.99

it's around 10 bucks each

do not put anything other than the stock NGK Double Platinum or you are opening a can of worms it has been said here a lot of times