R33 Misfiring Since Installed Bov!

[HaZ3inSKY]

Quite some time ago I installed a BOV! It was running all good for some time with the sweet sound of psssssch! Now it is misfiring and lagging as i pump the gas. Petrol comin out of exhaust not so much popping. I checked the intake pipes/ hoses for any cracks n stuff. All seems OK. The funny thing is when the BOV sounds it lags/ misfires and when it doesn't I get a rush of power!

Any suggestions?

[aphid]

sounds like a boost leak, is it doing it only when you hit boost or is misbehaving all the time? if it's all the time then let the engine idle and have a listen for any suspiciouse hissing noises around the intake piping..

if it's only doing it when boosting then chances are the increase in intake pressure is pushing apart one of the hoses in the engine bay, which will be alot harder to find unless you can boost it on a dyno and have a look.. or just burn some rubber with the bonnet up

[JVP]

atmo bov's dont generally work well with skylines ive noticed.

go back to plumback, and it should be fine i reckon.

[adam-__-]

The best thing would be to take off your bov and reinstall the standard plumback bov. The reason you're getting fuel 'pissing' out of your exhaust is that when your afm sees in coming air, it throws in more fuel to burn that air, but that air is going out of your bov, so there's nothing for that fuel to burn, so it goes out of your exhaust/runs rich. I hope that made some sense.

Does your car stall? I assume it would.

I think it's best to just reinstall your plumback bov.

[HaZ3inSKY]

Thanks 4 your help guyz! Yerr man, it has stalled a couple of times especially when I slow down. I think it probably is the bov it self, but I really want a bov on my car tho! It's a cheap HKS imitation BOV on ebay. shud i change it? shud i bring it to a dyno? is ther one in perth? wat u guyz think?

Edited August 16, 2007 by HaZ3inSKY

[clkngezz]

there are plenty of dynoes in perth, cheap hks ssq bovs have been known for some leaks, if u want the nice sound they make buy the genuine one, but i have stock plumback and my car runs like a dream sometimes hehe, plumback is way to go with skylines

[adam-__-]

If it's an atmo bov, chances are it's gonna stall when slowing down or after a rev. If you want to keep the bov, just learn to drive differently so that it doesn't stall. It's that or take it off and put the plumback bov back in.