strange goings on after quick blast
I've just taken my forged 2.5 blob out for a quick spin,on a nice long straight I gave it a bit in 3rd gear,looking in my mirror I saw a big cloud of black smoke so I came up to the next round about and dropped into neutral,the revs were dropping to normal then shooting up to around 2000rpm then straight back down to normal then back up again.
I pulled over and turned her off to have a look,couldn't see anything wrong so started her up,she stared fine but the idle sat at 2000rpm for about 7 or 8 seconds and then dropped down to normal idle (similar to cold start) She still drives fine and the jumpy idle has now gone but when I rev her there is a grey/black smoke coming from the exhaust No Eml/temperature fine/oil pressure and temp fine Any idea? |
I'd check the fuelling. Black smoke is normally an indication of over fuelling and would possibly explain the over revving on tickover.
Oil is white/grey smoke. |
Originally Posted by Rescue Dude
(Post 11739229)
I'd check the fuelling. Black smoke is normally an indication of over fuelling and would possibly explain the over revving on tickover.
Oil is white/grey smoke. |
Originally Posted by the shreksta
(Post 11739232)
OK thanks, the car has just been all over the east coast covering around 400 miles and everything was fine,parked her up for a week and now this happens
Strange. :wonder: Pull out the dip stick and give it a sniff. Hopefully you won't smell any petrol indicating borewash/drastic over fuelling. |
Sticking throttle valve?
|
I had the same on my wrx. It turned out to be a stuck idle control valve.
|
how would that cause the smoke when revved though?
|
Messes up the fuelling. Try taking it off and give it a clean
|
Yup, if the IACV doesnt return to its closed position it can cause all kinds of issues as it is letting excess air in, I think yours is a stepper motor so wouldnt hurt to clean it anyway
|
Originally Posted by JGlanzaV
(Post 11739434)
Yup, if the IACV doesnt return to its closed position it can cause all kinds of issues as it is letting excess air in, I think yours is a stepper motor so wouldnt hurt to clean it anyway
|
All times are GMT +1. The time now is 01:53 AM. |
© 2024 MH Sub I, LLC dba Internet Brands