Sorry, I've posted a few questions over the past few days, but as my car has been off the road for about 18 months I have a lot of questions stored up. My use of the forum tends to increase as I use the car...
My Car passed it's MOT with only a few advisories.
However I thought it was running rich asthe fumes smell quite a bit of petrol when running.
The sheet says that the CO reading was 0.64% and the HC reading was 71ppm.
I only ask because that seems to e to be way under the limits?
Plus my fuel economy is quite terrible (as I recall).
Do those readings seem okay?
MOT Pass - Emissions Question
Moderator: martauto
-
Kemlo
- E30 Zone Regular
- Posts: 342
- Joined: Tue Sep 25, 2007 11:00 pm
- Location: Birstall, West Yorkshire
-
pacerpete
- E30 Zone Team Member
- Posts: 18165
- Joined: Sun Jan 23, 2005 11:00 pm
- Location: Iver heath. South bucks.
Assuming your turd is a non cat car, them readings are very good, though a tad 'lean' which can lead to a fumey exhaust. I try and aim for 1%- 1.5% when setting them up.
Obviously being a quattroporte, maybe now is the time to consider fragging it ?
Obviously being a quattroporte, maybe now is the time to consider fragging it ?
-
Kemlo
- E30 Zone Regular
- Posts: 342
- Joined: Tue Sep 25, 2007 11:00 pm
- Location: Birstall, West Yorkshire
I'll try to 'unread' that.pacerpete wrote:Obviously being a quattroporte, maybe now is the time to consider fragging it ?
Will lean running impact the economy? Would the lean running be caused by an air leak?
God it's never ending... (Love that car).
-
polsta
- Married to the E30 Zone
- Posts: 10322
- Joined: Fri Oct 09, 2009 11:00 pm
- Location: portsmouth
pacerpete wrote:
Obviously being a quattroporte, maybe now is the time to consider fragging it ?
brilliant-
Rtaylor2208
- E30 Zone Addict
- Posts: 3004
- Joined: Mon Oct 11, 2010 11:00 pm
- Location: Ayr, Ayrshire, Scotland
Airleaks are the first culprit. Also have you had the injectors cleaned at all?
-
Kemlo
- E30 Zone Regular
- Posts: 342
- Joined: Tue Sep 25, 2007 11:00 pm
- Location: Birstall, West Yorkshire
Not yet, but I have the replacement 'o rings' and have bookmarked the wiki...Rtaylor2208 wrote:Airleaks are the first culprit. Also have you had the injectors cleaned at all?
-
pacerpete
- E30 Zone Team Member
- Posts: 18165
- Joined: Sun Jan 23, 2005 11:00 pm
- Location: Iver heath. South bucks.
Kemlo wrote:I'll try to 'unread' that.pacerpete wrote:Obviously being a quattroporte, maybe now is the time to consider fragging it ?
Will lean running impact the economy? Would the lean running be caused by an air leak?
God it's never ending... (Love that car).
It is obviously always worth having a good look around for air leaks and potential ones but your excellent hydrocarbon readings (PPMs ) indicate that all is welI .
Once you have gone over the intake side for leaks (spray WD40 or similar and listen for a rise in revs)I would go back to the test station and give them a drink to tweak it up to 1-1.5%
-
Kemlo
- E30 Zone Regular
- Posts: 342
- Joined: Tue Sep 25, 2007 11:00 pm
- Location: Birstall, West Yorkshire
Cheers, for that. Checking for air leaks and cleaning injectors in on my to do list. I do occaionally have an issue with it hunting when warm, but it's intermittent and I can't seem to recreate the issue.
Would lean running affect the MPG?
I'm not sure what I should be getting, but as I recall the OBC reckons I'm getting 18 ish, so god knows what the real number is.
I'll do a brim to brim when I can to check properly, but what could I reasonably expect to get from a full tank in the 325?
Car is with topless at the moment... I'll see what he thinks after he's had a play with it.
Would lean running affect the MPG?
I'm not sure what I should be getting, but as I recall the OBC reckons I'm getting 18 ish, so god knows what the real number is.
I'll do a brim to brim when I can to check properly, but what could I reasonably expect to get from a full tank in the 325?
Car is with topless at the moment... I'll see what he thinks after he's had a play with it.