cleaned intake manifold now spudder and shake.

[Guero112]

I recently took apart my intake manifold and hand cleaned it inside and out. I replaced the tb gasket, and gaskets between upper plenum, actuator, and lower half of manifold. I tightened everything up and it started after a few attempts.

I now have a spudder like feel during idle and acceleration. Im reaching 3k rpm a lot faster but it feels like maybe its no expelling the exhaust fast enough. The car shakes or vibration is a lot harsher due to tighting of manifold bracket and me needing new drivet side engine mount.

Any ideas as to why I might have developed spudder? Was running great prior to cleaning.

[Jarrett]

Was it difficult to get your TB gasket on or did it slide on very easily? They're easy to put on upside down and it will cause a vacuum leak. There could also just be a vacuum leak at any of the other gaskets also. You will also need to check your IACV screens and clean them if necessary, adjust your FITV and possibly your throttle cable if you didn't reinstall it exactly as it was removed.

Truly, it would be best for you to just start checking and rechecking everything that was removed. Are you throwing any codes? If so, then the reason that you're posting in here instead of reading those codes is a mystery to me. Also, try resetting the ECU.

[Guero112]

Although I will do wat u said again. Wen the weather clears, I can't help thinking replacing my exhaust will help. But then there is the obvious proof the problem started in intake and not exhaust which wasn't even touched.

Ugh and it was running purrrfect.. did a complete tune-up including valve adjustment. I was just tryna go above and beyond I guess.. thanks Jarrett

[92cb7pnw]

if you adjusted the valves it is possible for the valve lash to be off which could cause your exhaust valves to open an close at the wrong times

[Guero112]

I adjusted valves prior to the cleaning. 2 weeks prior to exact. And it ran great up until mani cleaning. Are u implying that I should readjust them again now?

[cpl hero]

Were you getting a check engine light before the cleaning?

[Guero112]

absolutely and it was my o2 sensor, which i haven't replaced because its stuck on there and i'm going to wait on whole new exhaust to replace it.

also i have news: i took it all apart again, replaced the flange nuts that fastens the manifold to the head. and tightened all 9 to 16 lbs./ft. same with the upper plenum and throttle body.

@Jarrett all the gaskets looked OK and i feel were put on correctly.

its running a little better. my vacuum hoses were routed all wrong so I fixed those.(prior to manifold re-tightening.)

i still have some spudder during acceleration, mostly in 1st and 2nd. when i reach higher gears it seems to run/flow smoother.

Any chance its a clogged Catalytic Converter and thus the o2 CEL? either way i'm replacing the whole exhaust ASAP. most likely an E-bay header-Muff tip combo kit..

[RyanD]

sounds like to me OP that you O2 is the problem. i know when mine went out it would sputter on accel.

[cpl hero]

Swap out the o2 if you threw out a cel on it already. And you also might wanna reset the ecu so as to drop the cel code stored in the ecu. This also may help the car re-establish the cars idle baseline. If i'm not mistaken you did some work on the tb.

http://www.civicforums.com/forums/18...-question.html

(check out post #3 as to why)

Just my 2 cents. Something to consider.

[Guero112]

i would replace my o2 now but its really rusted on there. i need to replace dented down-pipe, and catalytic converter as well so i just decided to save $200 and get an e-bay exhaust system for a short term replacement. i have and NTK o2 sensor now. brand new!!! i should have it all installed by mid may. ill be checking valve lash again tomorrow and hopefully next time i post it'll be to close this thang on out..

anywho here are some pics of the manifold disassembled and cleaned by hand.

i replaced the mounting/retainer bolts nuts that hold the manifold to the head with m8x1.25 flange nuts. they can be tightened w/ a 13mm metric socket, 10-12 point sockets are recommended.

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