Smokey Johnson 88 SPL

[dave524]

Hello All. I have a 1996 Joshnson 88 SPL that is running great. My question is the oil to gas mix. I am mixing it at 50 to 1, however this leaves a terrible smoke trail on the lake. Do I really need this much oil, or can I cut it back. Only smokes bad in no wake zones, or at the dock. Thanks alot. Dave

 

[emdsapmgr]

Re: Smokey Johnson 88 SPL

Check the temps of both heads with a laser gun when warmed up. 140-155 is normal. If either of the thermostat is stuck open, it can cause the powerhead to run cool, causing poor combustion and smoking.

 

[kenmyfam]

Re: Smokey Johnson 88 SPL

It will smoke more at lower motor speeds as it does not need as much oil at lower RPM. You are premixing at 50 to 1 so that is what it gets at all speeds. Noticed the same tendency with my motor when I went from the VRO pump to premixing. Great advice above for the head temperatures though. Could be a good time for a decarb.