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I'm at breaking point with my Maestro, he's now been off the road 7 weeks and I feel like I've tried everything!
All started with an intermittent misfire that gradually got worse despite:
Plugs, leads, coil, cap and rotor, inline filter, stripped and cleaned the carb three times (manual choke)
Tried plug gaps .35 and as listed in the Haynes manual and no difference.
In the end he broke down and I had to rev and ride the clutch to get him back on the drive, from then on he would only run a few seconds and die!
Replaced a split vacuum advance pipe, no change..
Tried a different brand rotor arm, no change.
Decided to empty my tank and found it to be swimming in rust and replaced my fuel pump and filter but no change.
Compression is 150psi on all four!
Then oddly enough I bought another set of plugs because the other set were now filthy and it fired up but sounded like it was firing on three, pulled off each lead but couldn't tell any difference. Tried adjusting the gaps, and we found we had a good spark but not making any real difference. My mate suggested rebuilding the carb as it seemed familiar with one of his motorbikes.
I bought a carb rebuild kit, needle and seat, needle valve, piston spring, float, adjusted to default settings and tried again... no real difference!
Then.. replaced the leads and we were now firing on all four! Adjusted the carb by ear and had him running a good twenty minutes or so but didn't drive him till the following day when I found he had an annoying misfire pulling away and when you blipped the throttle! Tried plug gaps again and the mixture but was only happy idling, this was winding me up!
Next evening wouldn't start and a couple days later I've finally managed to get him running but it's a fight and only lasts a few seconds! I'm back to square one and I swear it's the carb but I'm up to here with it and I may have gone over the top trying to get to the bottom of it but I need help!
Anyone local to Swadlincote able to lend a hand or opinion? Meant to be in daily use!
All started with an intermittent misfire that gradually got worse despite:
Plugs, leads, coil, cap and rotor, inline filter, stripped and cleaned the carb three times (manual choke)
Tried plug gaps .35 and as listed in the Haynes manual and no difference.
In the end he broke down and I had to rev and ride the clutch to get him back on the drive, from then on he would only run a few seconds and die!
Replaced a split vacuum advance pipe, no change..
Tried a different brand rotor arm, no change.
Decided to empty my tank and found it to be swimming in rust and replaced my fuel pump and filter but no change.
Compression is 150psi on all four!
Then oddly enough I bought another set of plugs because the other set were now filthy and it fired up but sounded like it was firing on three, pulled off each lead but couldn't tell any difference. Tried adjusting the gaps, and we found we had a good spark but not making any real difference. My mate suggested rebuilding the carb as it seemed familiar with one of his motorbikes.
I bought a carb rebuild kit, needle and seat, needle valve, piston spring, float, adjusted to default settings and tried again... no real difference!
Then.. replaced the leads and we were now firing on all four! Adjusted the carb by ear and had him running a good twenty minutes or so but didn't drive him till the following day when I found he had an annoying misfire pulling away and when you blipped the throttle! Tried plug gaps again and the mixture but was only happy idling, this was winding me up!
Next evening wouldn't start and a couple days later I've finally managed to get him running but it's a fight and only lasts a few seconds! I'm back to square one and I swear it's the carb but I'm up to here with it and I may have gone over the top trying to get to the bottom of it but I need help!
Anyone local to Swadlincote able to lend a hand or opinion? Meant to be in daily use!
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