Goes fine on the flat but any incline causes it to stall

[bmcecosse]

A possible 'cure' for stuck rings is to pour some diesel fuel in the spark plug holes and leave it overnight - then gently turn over by hand and repeat for a few days. it 'may' just work.. Best test of course will be a compression test - and/or a leak-down test.

[normajay99]

Have tested the compression 180 170 170 170 all appears to be ok , all breathers are clear so i will try the diesel in the spark plug remedy, can you tell me how mutch is required ,i was thinking a spoonfull ? also what is a leakdown test? thanks for the info

[bmcecosse]

VERY good compressions. I would say a good couple of table spoons in each - each time you do it. Leak down is where compressed air is forced in the spark plug hole - and then shut off - and time to drift down is noted. But with these comp results - you don't have any worries there - even so - the oil rings could still be stuck - so the diesel fuel may be worth trying. Other swill say 'valve stem oil seals' - and indeed it could be - if they are not fitted.....

[normajay99]

Have been out and bought some diesel so will try this test first over the next couple of days here,s hoping, will get back with the results

[bmcecosse]

Obviously - it will smoke like hell when you first start it after the diesel treatment!!

[Jaywhy]

Hello again to all those Morris enthusiasts who have tried to help with my problem!!! She wouldnt climb any inclines, but perseverance has paid off, so thank you all for your suggestions and comments. The answer has been in the timing, as after many changes to all sorts of things, a friend offered to lend me a strobe light to check the timing. It had been done a while ago, but manually without the strobe. It seemed to read around 12 BTDC, which was incorrect, so i tried it at 6-7 degrees then took Betsy down the road to my local hill, and lo and behold she shot up in 3rd gear without any of the usual spluttering so I was over the moon. This has been a real marathon for me, but the outcome is that with advice, everything has been either replaced or stripped down and cleaned so hopefully now I will get to drive her on the open road!! Only remaining job is to repair the faulty fuel guage which reads hjigh all the time. Thanks again for your advice and help..

Hi there - I have just opened this page and seen your initial problem. Last year I took my MM 1098 to Dorset to a place called Abbotsbury. It is a steep hill into Abbotsbury and very steep out. Anyway I decided to climb out the other side the next day.Two thirds up the hill, Kath (that's the name of my MM) stopped. Got her backdown the hill car started back up so I tried again, exactly the same spot stopped again. On the last day I was there decided to go out the other side. Just managed the hill and struggled all the way on the rest of my journey, took it to garage where I bought it from since it had been restored and there was a small warranty on it. It turned out that the timing was out and needed adjustment. It now runs exceptionally well.

[normajay99]

Back for more advice ! After putting diesel in spark plug holes over a couple of days as suggested moggie not billowing white and blue smoke when pulling away from lights,but still blue smoke when revving engine while stationary .This is a replacement engine and originally had a rocker cover with a breather on it, the engine now has only the crankcase breather to the carb, is this sufficient or would it be better to put the old one back to the air filter as well/would this help with the blue smoke problem? Thanks.

[bmcecosse]

The diesel will take a wee while to burn away. but YES - you need rocker cover breather - and it must be connected to the carb (best) or air cleaner (not best).

[normajay99]

I was thinking of both the crankcase breather which is connected to the carb at present and also fitting the original rocker cover with breather and connect it to the air filter, meaning itll have both operating, is this ok, or should i only have one type of system connected ,thanks

[bmcecosse]

I prefer to let some air in - via the side breather. In extremis I suspect it may bleed out some fume - when the other breather can't cope with it all. If both were blocked there would be pressure in the crankcase at that time......

[normajay99]

Sorry its been a few weeks since i last spoke of the problem of blue smoke from the exhaust , but now i have fitted the original rocker cover with the vent on it and connected to the air cleaner , [there was a vent pipe already from the crankcase to the carb ] it seems to have cut out most of the smoke now and running fine,thanks to all out there for your help in problem solving.

[bmcecosse]

Excellent!

[normajay99]

Sorry i am back again but the dreaded blue smoke is back also,had the moggie out over the weekend and running fine but have noticed blue smoke from exhaust but not loads.I checked spark plugs the next day, they were all oily, also checked oil level in engine and found it had used about a quarter to a third of a pint of oil, i had driven about 70 miles.I was hoping you can give me an idea to start looking,what Ive read here could suggest valve stem oil seals and this brings me into uncharted areas.Is it straightforward and what bits do i need to order to do the job properly,i read that you only need to do the inlet valves only not the exhaust,would this be right! Thanks for any advice, Vince.

[bmcecosse]

My experience is that this is simply a worn engine....you can try stem seals, some say it makes a difference. I have never found that to be so myself.... At least it's an easy/inexpensive thing to try!

[normajay99]

Thanks for your prompt reply bmcecosse regarding a possible worn engine ,is there any other way to identify this,Ive already done a compression test 180 170 170 170 a few weeks back and the cars running fine,it is just annoying that i cant get rid of this problem.If it is the engine does that mean a rebore and new pistons rings etc,as you have probably guessed by now Im a novice on engines havent stripped one down and dont realy know what i am looking for,read plenty,but no substitute for hands on! Thanks for your advice .

[bmcecosse]

The compressions are excellent - so by all means try stem seals....