09-11-2017, 11:13 PM
I've tried to eliminate ignition problems by swapping out the mag and fitting new plugs. The mag has recently been at my 'mag man' and I stood by him as he had it on his test rig and ran it up to 6000 rpm without missing a beat - both at room temp and then after raising to 50c in an oven, so I can't believe its anything electrical. I have to continue down the fuel/carb route...
Pulling the choke out does improve things but lowering the jets 3 or 4 flats may improve things but why should I suddenly have to do that?I'm the sort of chap that wants to understand 'why' before I start making changes.. And there should be no sudden reason to drop the jet 3 flats...
The night the fault showed itself, I drove 10 miles (albeit with some difficulty) to the local Riley group (and 10 miles back) so the engine certainly gor to operational temperature but there was no change to the fault behaviour... And when I've been exploring the problem, I've got it up to operational temp in the garage...
I'm going to change the manifold tomorrow as my next step...
Pulling the choke out does improve things but lowering the jets 3 or 4 flats may improve things but why should I suddenly have to do that?I'm the sort of chap that wants to understand 'why' before I start making changes.. And there should be no sudden reason to drop the jet 3 flats...
The night the fault showed itself, I drove 10 miles (albeit with some difficulty) to the local Riley group (and 10 miles back) so the engine certainly gor to operational temperature but there was no change to the fault behaviour... And when I've been exploring the problem, I've got it up to operational temp in the garage...
I'm going to change the manifold tomorrow as my next step...