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Topics - toz

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British Bikes / 1972 T120 Bonneville prob.

« on: July 21, 2014, 02:18:50 PM »

I'm sick of trying to find the problem here.

Bike starts and runs ok but revs don't drop immediately when changing gear, it seems to stick a bit, yet the slide is dropping fine. Oh and tick over isn't great.

Had the carb off more times than I care to mention, float is set, jets all clean, timing is ok I think.

Any ideas chaps?

British Bikes / 1972 T120R

« on: July 24, 2011, 06:24:48 PM »

Bike been laid up for 3 weeks as I have been away. Just before I went I noticed her popping back through the carb now and again but nothing serious.

Today she ran like a pig, ok one min then failing, then ok, finally she stopped and for the first time I had to push her home.

Fuel or ignition I thought and went for ignition first, spark looked ok but maybe a bit weak sometimes, it has a Boyer on. Plugs not black but a nice colour.

Checked the carb and noticed her leaking fuel out of the tickler on an intermitant basis, flooding out sometimes. Float seems ok but main jet did have a bit of something in there, blew it out. Got her going again but difficult to start and when I do she is popping and farting like a good un. Runs ok once going at a good pace but stops when I have to slow down, difficult to keep her going.

Im thinking carb. Any offers please.

British Bikes / T120 pinking

« on: April 10, 2011, 06:28:58 PM »

Hi,
Just aquired a lovely 1972 T120 Bonni. It rides well, starts first or second kick and seems smooth enough.

However, when it gets hot, and only when hot, it pinks considerably at mid range revs or when under load. The pinking goes all together if I open her up a bit but its annoying me and I dont want to do any damage.
Started of on 95 octane unleaded but went on to 97 to see if it made any difference, nope, just the same.

The only other thing I can think of is to retard the timing slightly, should I ? or is there something else I should be considering?

Thank you in anticipation.