Hawaii_Ed
Member
After over 1200 miles of happy commuting, my happy time started not being so happy My friend 5-7 Heaven and I are planning on some fun Island rides, and I am trying to get the old girl together. I was sorta thread jacking the carb thread, so started here.
Details are:
- 66cc Gasbike kit, just a basic motor on a cheap beach cruser
- 36T sprocket, 12 gauge spokes and upgraded rims
- NGK plug, upgraded wire, and sickbike parts bolt kit
- Rubber fuel line with inline filter
The bike was running great, rolling at 25-28 easy, had hit 35 on flats with no wind. I rode it over 100 miles a week, and was a daily rider for months. I was just bragging to a friend how great the bike was running. Then I rode it home, and noticed no power, serious bog when I hit the throttle, and it was surging RPM at idle.
- Started to investigate, my main guess was a carb problem.
- I redid the gasket on the intake port, and 5-7 had a sparke pocketbike carb setup. After that the bike ran better, no surging, but would not rev up on the RPM's.
- Checked the fuel flow, and it was a trickle. Pulled out the in tank filter of the petcock, it is better, but still not a gush.
- Really no change in performance.
- Thinking the exhaust might be clogged, I put a spare I have on the bike, also no change.
- Swapped the plug with the unused stocker, and it is about the same still.
- Pulled the head, and I was suprised to find no gasket. No signs of blow out though. It was greasy and wet, I cleaned it up. Cmpression seems strong with the thumb test, I can get a gauge to check if needed.
- There is some leakage at the base gasket. I will prob try taking it off and just doing the high-temp RTV.
- I ordered a new head gasket and slant head, will see if that helps.
I will keep everyone posted. Not sure what else to try yet. If I have to buy a new engine I will. I my gasbike
Ed
Details are:
- 66cc Gasbike kit, just a basic motor on a cheap beach cruser
- 36T sprocket, 12 gauge spokes and upgraded rims
- NGK plug, upgraded wire, and sickbike parts bolt kit
- Rubber fuel line with inline filter
The bike was running great, rolling at 25-28 easy, had hit 35 on flats with no wind. I rode it over 100 miles a week, and was a daily rider for months. I was just bragging to a friend how great the bike was running. Then I rode it home, and noticed no power, serious bog when I hit the throttle, and it was surging RPM at idle.
- Started to investigate, my main guess was a carb problem.
- I redid the gasket on the intake port, and 5-7 had a sparke pocketbike carb setup. After that the bike ran better, no surging, but would not rev up on the RPM's.
- Checked the fuel flow, and it was a trickle. Pulled out the in tank filter of the petcock, it is better, but still not a gush.
- Really no change in performance.
- Thinking the exhaust might be clogged, I put a spare I have on the bike, also no change.
- Swapped the plug with the unused stocker, and it is about the same still.
- Pulled the head, and I was suprised to find no gasket. No signs of blow out though. It was greasy and wet, I cleaned it up. Cmpression seems strong with the thumb test, I can get a gauge to check if needed.
- There is some leakage at the base gasket. I will prob try taking it off and just doing the high-temp RTV.
- I ordered a new head gasket and slant head, will see if that helps.
I will keep everyone posted. Not sure what else to try yet. If I have to buy a new engine I will. I my gasbike
Ed