has anyone had experience of K&N air filters causing issues?
this is what has happened this morning after fitting this K&N
car running well yesterday, no smoke, pulled really strong & clean. just the maf in place, no filter.
fitted the K&N this morning, started up fine. went to blip the throttle from under the bonnet and the throttle stuck open, not full but pulling plenty of revs. switched it off quick, but had a few seconds revving freely which isn't nice.
the little sheath over the throttle cable end had come adrift and jammed the linkage
cut it off and restarted fine.
let it tick-over a bit then took it for a run, blue smoke, lots. did clear after a mile or so but still a few traces
now there are 3 scenarios that i can think of as to what has happened.
1/ the car doesn't like the K&N and is sucking oil vapour through the breather pipe as the filter is too restrictive
2/ when i switched the engine off from fairly high revs it sucked oil into the exhaust/turbo through the breathers and is now burning it off
3/ i've knackered my turbo by it running at high revs then being switched straight off
pretty out of fuel now so can't tyr it until i get some cans filled. was going to take the K&N off and see if the smoke clears, think that's my next test.
which problem is it? or something i've not considered?
1/ can't see the K&N being too restrictive? thought they were meant to be more free flowing
2/ hope it's that and i haven't done any damage
3/ really hope i haven't knackered the turbo
any thoughts guys??