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200 Series General Forum for the Volvo 240 and 260 cars |
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Mot passed - is it too lean?Views : 786 Replies : 6Users Viewing This Thread : |
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Apr 26th, 2022, 20:51 | #1 |
Junior Member
Last Online: Apr 8th, 2024 20:08
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Location: Aberystwyth
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Mot passed - is it too lean?
Just had the MOT done on the car - 245GL 1988 2.0l. The CO is recorded as 0.71% This seems lean to me - my experiences are with weber carburettors though which should be about 2%. I cant find any info on what the mix should be on this car, and I'm not sure what fuel injection system i have, so can't look anything further up.
Can anyone help with this at all? I also don't have access easily to an analyser, so there would be a little bit of guesswork involved in this. Also, see the MOT certificate attached, anything serious on this list of advisories? Thanks |
Apr 26th, 2022, 21:27 | #2 | |
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All those items should have been picked up on your last service , if you neglect them you will have to get them all done at once which is what has happened ..
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My comments are only based on my opinions and vast experience . |
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Apr 27th, 2022, 14:31 | #3 |
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Last Online: Apr 26th, 2024 15:03
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Due to the design, all 240 front wheel bearings should have a little play in them - if not, they are wound up too tight and will destroy themselves prematurely.
The inner rack ends were possibly checked in the wrong position, knowing what MOT testers don't know! Can you feel any clunks or knocks when driving/turning? Rock the steering gently and see what can be seen in both the rack ends and the TRE? Slight play is nothing to worry about. That's not an oil leak! That's a automatic chassis lubrication system!!
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1989 240DL estate 1982 323i 2012 Punto Easy 1.4 2010 116d 2011 X3 3.0d |
Apr 27th, 2022, 19:33 | #4 |
Not an expert but ...
Last Online: Yesterday 08:29
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Location: Boncath
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I agree - they are only very minor faults, and possibly not even faults at all.
I used to have the same annual discussion with the MOT tester over taper roller bearings. Modern cars use pre-loaded bearings - there is no play. Taper bearings should have a very small almost imperceptible play. I've always found the best way to set them is to take the bearing cap off and tighten the nut with the wheel on, rocking it until the play has almost but not quite gone. Tightened properly and greased once in a blue moon in my experience they never wear out. |
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Apr 27th, 2022, 21:30 | #5 | ||
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lift (with both front wheels in the air). Back in my garage, with only one wheel up it was perfect... |
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Apr 28th, 2022, 08:03 | #6 |
Not an expert but ...
Last Online: Yesterday 08:29
Join Date: Dec 2001
Location: Boncath
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"The inner rack ends were possibly checked in the wrong position,"
The inner joints move in two planes - up and down, and horizontally with the steering. They tend to wear slightly unevenly. Often if you rotate the ball slightly it bears on an unworn section, and you get a new lease of life. |
Jun 9th, 2022, 13:59 | #7 | |
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Last Online: Apr 8th, 2024 20:08
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Location: Aberystwyth
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Thanks for all the advice, sorry I've been away for a bit. The car is new to me, hence still finding out a few things about it. My dad has had it since 1992, and recently allowed me to have it, at last! I've wanted it for 30 odd years. Its not perfect, but I am enjoying it for now.
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As to the rack ends, i really have no clue about them at all... is there a symptom i should look out for, it seems to drive ok, if a little tail happy around corners (which i suspect are the bushes?) Thanks, I'll try and get some pics up too, see if anyone is interested?! |
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