Gazdaman
Member
Registered: 30th Aug 07
Location: Leicester
User status: Offline
|
So I took my car in for its MOT a couple of weeks back.
Failed on a few minor bits that I've sorted.
but they refused to test emissions due to black smoke. So I've changed the air filter, which was pretty gummed up, and given it an oil and filter change.
It's much much better on acceleration, but still smokes quite heavily if you get the revs up too high, or come off the throttle suddenly from high revs.
My question is, if it's still too smokey to get through the MOT, what do I check next?
Gaz
|
lostboy
Banned
Registered: 29th Jan 09
Location: Durham
User status: Offline
|
Try some new spark plugs.
|
Gazdaman
Member
Registered: 30th Aug 07
Location: Leicester
User status: Offline
|
Oh dear god.
|
lostboy
Banned
Registered: 29th Jan 09
Location: Durham
User status: Offline
|
|
peggsie
Member
Registered: 30th Aug 08
Location: guisborough
User status: Offline
|
try fuel filter, also could try sum injector cleaner through your tank might help it other than that i wouldn't no wot to check is it a flat diesel or turbo diesel?
|
Gazdaman
Member
Registered: 30th Aug 07
Location: Leicester
User status: Offline
|
N/a diesel. I'll put some redex through it with a tank of fuel today and see if that helps. Failing that, I'm thinking reset the fuel pump, and check the valves.
|
Scotty C
Member
Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
User status: Offline
|
EGR?
|
SportBoy
Member
Registered: 5th Oct 01
Location: Retford, Nottinghamshire
User status: Offline
|
give it a thrash, exhaust is prob sooted up.
|
Gazdaman
Member
Registered: 30th Aug 07
Location: Leicester
User status: Offline
|
It gets a fairly good going over, always has long runs, never less than 30 miles. I've probably put nearly 4k miles on it in about 3 months.
EGR's worth a look though.
|
sand-eel
Member
Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
User status: Offline
|
Does it start quite easily?
|
Gazdaman
Member
Registered: 30th Aug 07
Location: Leicester
User status: Offline
|
Very easily, compression seems good.
|
Scotty C
Member
Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
User status: Offline
|
Have u got a Mityvac?
|
Gazdaman
Member
Registered: 30th Aug 07
Location: Leicester
User status: Offline
|
I suppose the fact I had to google what one was should have answered my question.
But no, I don't.
Gaz
|
Scotty C
Member
Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
User status: Offline
|
Buy one, and use it to check if your EGR is opening and closing.
|
DENTYSRI
Member
Registered: 13th Nov 08
Location: Co. Durham
User status: Offline
|
sounds like the pump has been wound up to high to me
|
AlunJ
Member
Registered: 3rd Apr 07
Location: Newport
User status: Offline
|
i'd try some redex maybe myself and give it death down some duals to clear any shite in the exhaust. as has been said, could be problem with pump though
|
sand-eel
Member
Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
User status: Offline
|
quote: Originally posted by Gazdaman
Very easily, compression seems good.
Won't be glow plugs then.
|
Gazdaman
Member
Registered: 30th Aug 07
Location: Leicester
User status: Offline
|
I'll start with redex and give it some death, then fuel pump, then EGR, then I'll worry. I found my MOT cert, and it'll still ok for another month, so I've got a while to work it out.
|
Eck
Premium Member
Registered: 17th Apr 06
Location: Lundin Links, Fife
User status: Offline
|
Correct me if I'm wrong... But if you take a car in for an MOT with 1 month remaining, and it fails, it is then void?
|
richc
Member
Registered: 24th Mar 07
Location: Ilkeston
User status: Offline
|
Redex and death for me.....
|
weddy1988
Member
Registered: 17th Sep 07
Location: Fife
User status: Offline
|
would never be glow plugs any ways buddy
Glow plugs are only there to start the vechile
ounce started up runs its self
Christ diesels can run with no battery ect...if a diesels gouvoner brakes and u dont cut the fuel it will jsut rev all the way till it blows up lolol...cant find a good google one but by god its sum bang when a lorry one or bus one blows up **Ping straight through the block **
cant beat a dirty derv
my first thing i'd look at is the pump though
|
spencer88
Member
Registered: 6th Oct 08
Location: cornwall
User status: Offline
|
If you want to clean the engine out use some biodiesel in it.
|
Gazdaman
Member
Registered: 30th Aug 07
Location: Leicester
User status: Offline
|
Right, redex is in the tank now. So we'll see come MOT retest time!
And I believe if your car fails it's MOT it's still valid until the end of the original certificate. Unless it's a dangerous failure and they prohibit the car.
Gaz
|
Gazdaman
Member
Registered: 30th Aug 07
Location: Leicester
User status: Offline
|
Hi guys, need some more ideas. I've gone through an entire bottle of redex in two tanks of fuel now. And I've given it some mega-death including 80mph in fourth.
It seems to be a little better after giving it death, but soon goes back to its normal smokey self.
It seems worst under heavy load, like up a hill in fourth, it'll steadily smoke then there will be a MASSIVE billow when I change up.
I've been advised to look at the rocker breather, tube that goes from the rocker cover to the inlet plenium. Possible oil in there?
I'm informed my engine doesn't have EGR, so it's not going to be that.
Keep those ideas coming peoples!
|
Scotty C
Member
Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
User status: Offline
|
Yeah, could well be the breather! easy job
|