I have a two stroke engine that has excessive wear on both cams. They are so badly worn they have both gone to an 'egg' shape over the valves. I think this is the cause of the engine missing, but the miss is very regular, in fact it seems to only fire on every other stroke. Would that be the problem! Thoughts!
trouser,
Jan 4, 6:17am
cool.
jmma,
Jan 4, 6:45am
and what engine is this !
40wav,
Jan 4, 6:48am
Does that matter!
floscey,
Jan 4, 6:49am
what two stroke has cams and valves!
countrypete,
Jan 4, 6:50am
Can't fix that.But you could try getting another motor the same, welding them together end on end.The vibration might just just cancel out.
dunwoody,
Jan 4, 6:50am
Easy fix. Don't put so much oil in the petrol mix.
drog,
Jan 4, 6:50am
Problem will be solved by using a hi-lift spark plug. For sure.
40wav,
Jan 4, 6:52am
Thanks, will start looking for one similar.
40wav,
Jan 4, 6:52am
Thanks, where might I get such an item please!
40wav,
Jan 4, 6:54am
And if I find a second engine to join together, should I use a hi-lift spark plug in both, or just the one with the problem now! Cheers.
supernova2,
Jan 4, 7:05am
Nah all the above advice is wrong.You need a second ignition set to provide a spark for the other stroke.As for the cams are they the hard boiled egg shape of the poached egg shape!IMHO you need the poached egg shape but for high performace use you need them reground to scrambled - that what they used to use in scrambler motorcycles.
kazbanz,
Jan 4, 7:22am
You need to change the two stroke mixture possibly using low low compression two strokeoil
paul861,
Jan 4, 7:26am
detroit
40wav,
Jan 4, 8:02am
Thanks for your valuable advice. I intend to get the cams filled and ground so they are round and the same diameter as the largest piece of the 'egg', that way the valves will be wide open all the time. I know that a modification is to open the valves wider, so surely this will give it massive performance, wont it!
40wav,
Jan 4, 8:07am
When I noticed the cams were wearing so badly I changed the mixture to 10 to 1 to try and lube them more, but that didn't seem to help. I think I have the medium/high compression oil because it hisses a little bit when I take the lid off the bottle.
bill-robinson,
Jan 4, 8:08am
i think it is a 4 stroke
40wav,
Jan 4, 8:11am
What makes you say that!
llortmt,
Jan 4, 8:12am
You want to put some Flashlube in the fuel soonest!
40wav,
Jan 4, 8:14am
That could be the answer! I will buy a VW, run it on Flashlube, and all my problems will go away!
icemans1,
Jan 4, 8:21am
PMSL @ 2 stroke with cam and valves
icemans1,
Jan 4, 8:24am
where does the coolant go in an old VW beetle!
chebry,
Jan 4, 8:27am
Detroit/GM diesel
icemans1,
Jan 4, 8:32am
i doubt very much that the OP has one of these
40wav,
Jan 4, 8:42am
I might have a grader or a scraper or just an engine to play with and get going.
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