Shudder At High Rpm

[Ishman]

Hi,

I had to drive my R33 Gtr through a fair bit of water lately, thanks to the far north queensland monsoonal weather. One especially wet day it started to shudder at high revs; I'm not certain that the water is to blame and wondered if anyone else has had a similar experience. I have a pod filter at the front just under the headlight, and Z32 afm not far back.

Has anyone else had their car shudder at high revs and if so what was the cause (I did search this first but not much luck)

Ps where's the distributor cap hiding?

[ZacZerbst]

no distributor. r33 skylines use coil packs, located under the centre cover of your engine. if you remove the coils inspect them cracks as this can cause a miss. if your worried about possible water in the engine do a compression test. if there is water in any of the cylinders it will have a higher reading than normal

[Ishman]

no distributor. r33 skylines use coil packs, located under the centre cover of your engine. if you remove the coils inspect them cracks as this can cause a miss. if your worried about possible water in the engine do a compression test. if there is water in any of the cylinders it will have a higher reading than normal

Thanks, I had a feeling that was the case, which is why my searches for "distributor cap" didn't produce much.

Surely the afm would stuff up before water got into the engine, no?

[Moodles2]

AFM element burns hot on shutdown, burns off anything attached to it (oil, condensation etc).

Shudder can be as mentioned above, firing on 5 cylinders throwing the engine out of balance.