19-05-2023, 06:21 PM
As Willie Nelson sang “Ain’t it good to be back on the road again…..” so having put Ruby all back together again and had her running on the drive yesterday I took her out for the first trip today.
All seemed to go well and was impressed with the way she was pulling.
The timing was set at the mid point between 1 1/4 and 2” before top dead centre. I have made a pointer fixed to the crankcase and made a permanent marking on the fan pulley so this can be used at any point in the future.
However, the engine seems to be ticking over too fast. I checked the bolts on the carburettor and found I could tighten these further. I have backed off the throttle stop screw as far as possible also the interconnection screw so cannot reduce these any further. The air regulator screw is new and was set by closing this down as far as possible and turning this back one full turn as noted in the Zenith bulletin, but the tickover speed still seems to high. However there is a lag when you first accelerate, not sure if this is a carburettor or timing issue.
The other issue of note is the excessive smoking from the exhaust, now this is the first driving of Ruby after fitting new rings and honing. The plugs were very oily so I have checked the compressions and all are 120 +or- 1.
I realise this may be completely normal but any words of wisdom would be much appreciated.
All seemed to go well and was impressed with the way she was pulling.
The timing was set at the mid point between 1 1/4 and 2” before top dead centre. I have made a pointer fixed to the crankcase and made a permanent marking on the fan pulley so this can be used at any point in the future.
However, the engine seems to be ticking over too fast. I checked the bolts on the carburettor and found I could tighten these further. I have backed off the throttle stop screw as far as possible also the interconnection screw so cannot reduce these any further. The air regulator screw is new and was set by closing this down as far as possible and turning this back one full turn as noted in the Zenith bulletin, but the tickover speed still seems to high. However there is a lag when you first accelerate, not sure if this is a carburettor or timing issue.
The other issue of note is the excessive smoking from the exhaust, now this is the first driving of Ruby after fitting new rings and honing. The plugs were very oily so I have checked the compressions and all are 120 +or- 1.
I realise this may be completely normal but any words of wisdom would be much appreciated.