Search found 188 matches

by stevewhitt
Wed Dec 27, 2023 5:22 pm
Forum: Four stroke
Topic: Small end question
Replies: 4
Views: 350

Re: Small end question

Thank you all for the replies, sadly it a strip down job again!
Can almost do it with my eyes closed now
by stevewhitt
Wed Dec 27, 2023 8:41 am
Forum: Four stroke
Topic: Small end question
Replies: 4
Views: 350

Small end question

Hi I had reason to remove the piston recently on my w/ng. Had to heat the piston to remove the gudgeon pin. After putting it back together, again with heat, the piston was not as free as it had been previously, so I took it out apart and tried with the pin round the other way; it was only marginally...
by stevewhitt
Wed Dec 27, 2023 8:32 am
Forum: Four stroke
Topic: Lots of white smoke - W/NG
Replies: 29
Views: 1340

Re: Lots of white smoke - W/NG

The previous owner never used the bike Paul, but he bought it from a soldier based near Swindon; sorry, but I don't know his name.
by stevewhitt
Sun Dec 24, 2023 1:30 pm
Forum: Four stroke
Topic: Lots of white smoke - W/NG
Replies: 29
Views: 1340

Re: Lots of white smoke - W/NG

I think I may have found the smoking gun. I ordered new springs and 7/32" balls for the oil pump following advice from Nev. So this morning, I removed the pump and out of curiosity, I tested the plungers using the 'pop' method; nothing on the delivery side, no resistance whatsoever. This is odd...
by stevewhitt
Sat Dec 23, 2023 10:01 am
Forum: Four stroke
Topic: Lots of white smoke - W/NG
Replies: 29
Views: 1340

Re: Lots of white smoke - W/NG

Some progress at last. Drained the sump of 300ml of oil, started first kick, no white smoke and spurts into oil tank rather than a continuous flow. So I now know a lot more than I did 2 days ago, specifically, lots of things that are not the cause. I have the left the sump off with a container under...
by stevewhitt
Fri Dec 22, 2023 8:19 pm
Forum: Four stroke
Topic: Lots of white smoke - W/NG
Replies: 29
Views: 1340

Re: Lots of white smoke - W/NG

Sorry Guys, with lots of white smoke.
by stevewhitt
Fri Dec 22, 2023 4:26 pm
Forum: Four stroke
Topic: Lots of white smoke - W/NG
Replies: 29
Views: 1340

Re: Lots of white smoke - W/NG

Now reassembled, and running. I can confirm there is a constant stream of oil on the return into the oil tank. So much so that it filled the oil tank up requiring me to drain some off. I will drain the sump tomorrow and retry. At least I can rule out the oil pump! It is stamped 1949, so yes, a later...
by stevewhitt
Fri Dec 22, 2023 12:57 pm
Forum: Four stroke
Topic: Lots of white smoke - W/NG
Replies: 29
Views: 1340

Re: Lots of white smoke - W/NG

Is the oil returning to the tank as frothy bubbles/little spurts or a constant stream? If the latter there's a lot in the sump which will cause smoke until it clears. (As an aside - I'm sure you're running the bike on the rear stand - my VH would smoke like billy-oh after a few minutes on the side ...
by stevewhitt
Fri Dec 22, 2023 10:31 am
Forum: Four stroke
Topic: Lots of white smoke - W/NG
Replies: 29
Views: 1340

Re: Lots of white smoke - W/NG

Hi Nev/Will I took the pump off and there appears to little resistance when covering the top port and pulling the plunger out, no pop as such. If I cover both ports there is a good pop, but the workshop manuals states to cover the top port only. Measuring the plungers, the larger of the two measure ...
by stevewhitt
Thu Dec 21, 2023 8:48 pm
Forum: Four stroke
Topic: Lots of white smoke - W/NG
Replies: 29
Views: 1340

Re: Lots of white smoke - W/NG

I spoke to the engineer who fitted the new valve guides today, and that is what he wondered as well. Why would oil accumulate in the rocker boxes? When I removed them today, there was an accumulation of oil at the bottom of one of them. I can check the oil pump but that is a part that was working an...