|
200 Series General Forum for the Volvo 240 and 260 cars |
Information |
|
MOT fail for CO2 - adjusting a Stromberg 175 CDUSViews : 1591 Replies : 16Users Viewing This Thread : |
|
Thread Tools | Display Modes |
Aug 16th, 2018, 09:29 | #11 |
Premier Member
Last Online: Today 10:15
Join Date: Sep 2017
Location: STANDISH LANCASHIRE
|
|
Aug 16th, 2018, 12:27 | #12 |
Premier Member
Last Online: Today 09:43
Join Date: Mar 2013
Location: Yorkshire man living in County Durham
|
If I remember correctly (never had a carb engine since 1990) there should be a line on the inside but about half to 2/3 way up should do it. The carb will not run correctly if there is no or very little oil in the dashpot.
Last edited by nu11eaf; Aug 16th, 2018 at 12:30. |
Aug 16th, 2018, 12:32 | #13 | |
VOC Member
Last Online: Today 13:08
Join Date: Dec 2002
Location: Lancashire
|
Bent needle?
Quote:
Is the needle really bent, or is it a spring loaded "biased" needle? Best regards, Doug |
|
The Following User Says Thank You to Old Bean For This Useful Post: |
Aug 16th, 2018, 14:05 | #14 | |
Experienced Member
Last Online: Today 11:31
Join Date: Jun 2007
Location: L/H side
|
Quote:
__________________
My comments are only based on my opinions and vast experience . |
|
Aug 16th, 2018, 14:44 | #15 |
VOC Member
Last Online: Jun 8th, 2024 14:56
Join Date: Jul 2006
Location: Chatham
|
Removing the air filter element sometimes helps. Just for the MOT, replace it afterwards. A clean up of the engine and surrounds will probably improve the mood of your MOT tester. At least it shows you're trying. Nicer for you to work on too.
|
Aug 16th, 2018, 23:30 | #16 |
Master Member
Last Online: Yesterday 14:32
Join Date: Nov 2012
Location: London and Cambridge
|
Some progress...
Took the carb off the car this evening, was easy enough to remove - the spare carb is seized to its inlet manifold, I was glad the one on the car just unbolted. I took the carb to bits and used a lot of carb cleaner to get it as clean as possible- the diaphragm is in perfect condition, it might have been replaced recentlyish as it feels soft and supple. The needle has a tiny, just visible to the eye, mark down near the tip, a horizontal scratch around maybe 1/5 of the circumference. Hard to see, I can feel it with a finger nail though. I guess a replacement needle would be a good idea. The air valve on the side was seized and gummy, even after cleaning it with cleaner it didn’t operate like the one on the spare carb so I swapped them over. The adjustment bolt on the bottom had another 1 and 1/4 turns in to go, so there’s some adjustment yet. I’ll get it back on tomorrow and see how I get on- I’ve booked half an hour of workshop time before the mot so I can have a play with the car hooked up to the emissions monitor. If needs be I can use that time to remove the airfilter - thanks for the suggestion Cheers Oh, the needle in the spare carb is definitely bent- it looks bent and as it’s spring loaded I can twist it in my fingers I can feel the bend. I’ll post a photo when I get a chance. |
Aug 17th, 2018, 19:26 | #17 |
Master Member
Last Online: Yesterday 14:32
Join Date: Nov 2012
Location: London and Cambridge
|
Passed the MOT this afternoon at 4.31% co
Took the car for a drive round the long way to get to the garage and then with it idling connected to the emissions tester I leaned the mixture out gradually until the above figure was reached. Didn’t run out of adjustment, so I didn’t need to resort to removing the airfilter or anything like that. Success! Thanks for your help all, much appreciated. Cheers |
The Following 4 Users Say Thank You to Bugjam1999 For This Useful Post: |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|