Subject: RPM drops at lights Tue Oct 29, 2024 2:41 pm
Hi everyone,
I bought a 2007 GRiSO a few weeks ago, and it's been running great overall. However, I've noticed that after about 30 minutes of riding, the engine shuts off when the RPM drops—like when I’m stopping at lights or idling in neutral. It starts back up without any issues, but it stalls again unless I keep the throttle open.
Has anyone experienced this before or have any suggestions?
Thanks!
Pete Roper GRiSO Capo
Posts : 10704 Join date : 2013-05-29 Age : 67
Subject: Re: RPM drops at lights Tue Oct 29, 2024 3:10 pm
Check the valve clearances.
Vancityvagabond likes this post
orngm2 Tanabuso
Posts : 62 Join date : 2019-01-30
Subject: Re: RPM drops at lights Tue Oct 29, 2024 4:11 pm
Same here Check valve clearances.
Had the same issue with mine... the phase sensor was leaking oil. Removed and replaced the oring and bike would start and never idled right. Ran perfect before. My phase sensor had 3 shims on the back of it to adjust depth when installing. I removed the smallest shim and boom, problem solved.
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beetle GRiSO Capo
Posts : 10198 Join date : 2013-09-30
Subject: Re: RPM drops at lights Tue Oct 29, 2024 4:58 pm
As above. Then balance the throttle bodies (including TPS reset).
Subject: RPM drops at lights 
Tue Oct 29, 2024 2:41 pm
