New kit low compression
Posted: Sat May 29, 2021 2:10 pm
Hi guys,
I'm at my wits end with this issue.
It's a 94 Elite SA50P. I'm getting compression around 80 or 90 PSI on a new 82cc NYC kit from scooter swap shop. It was around 110 when I first installed it but has since gotten lower. New rings, head, gaskets, piston and jug. I just did the crank seals as well. 24mm PWK carb with a new intake, uni filter, and a new exhaust.
The engine fires like it's going to start and gets noticeably warmer after trying to start but it won't catch and stay running. Everything seems to be sealed up right around the base and head gasket. It's definitely getting fuel. I also replaced the vacuum line because it looked rough. It has spark.
Any thoughts on the low PSI? is the kit just junk?
I'm at my wits end with this issue.
It's a 94 Elite SA50P. I'm getting compression around 80 or 90 PSI on a new 82cc NYC kit from scooter swap shop. It was around 110 when I first installed it but has since gotten lower. New rings, head, gaskets, piston and jug. I just did the crank seals as well. 24mm PWK carb with a new intake, uni filter, and a new exhaust.
The engine fires like it's going to start and gets noticeably warmer after trying to start but it won't catch and stay running. Everything seems to be sealed up right around the base and head gasket. It's definitely getting fuel. I also replaced the vacuum line because it looked rough. It has spark.
Any thoughts on the low PSI? is the kit just junk?