Any advice for buying a temporary tachometer for tuning? (Tiny Tach, etc.)
3 cyl. Merc. 2-stroke
None of my gauges work but I don't have time to deal with all of that right now.
Lots of low-rpm running and/or excess oil mixed into the fuel can cause this.
Also an obstructed air intake would cause a rich mixture. There's another thread here where a mud dauber built his home in an air intake. :-)
And my other questions?
Is something wrapped around your prop. shaft?
Fouled spark plug(s)?
Low compression?
Fuel restriction? (crap in filter or quick connector or carbs)
Exhaust restriction? (carbon buildup)
Coil(s) going bad?
It does this from the start? Or after 5 minutes? Or after an hour? You haven't cleared that up yet.
Is something wrapped around your prop. shaft?
Fouled spark plug(s)?
Low compression?
Fuel restriction? (crap in filter or quick connector or carbs)
Exhaust restriction? (carbon buildup)
Coil(s)...
Sons o' bitches!
I got a smoking deal on a Stihl chainsaw that a guy gave up on.
You guessed it. Dobers had plugged the exhaust tube. Reamed that out and I had a like-new saw.
You won't find this stuff in your repair manuals.
:)
True. Going richer shouldn't hurt anything except a bit more smoke and maybe fouled plugs. But I don't think we have enough info. from this person yet to send him into doing something that he's not even familiar/confortable with.
If it was running good before then I wouldn't mess with the jets.
I only mess with jetting when dealing with major changes in altitude or air temperature.
If the problem seems to be engine temperature then I'd suspect the cooling system or the coils or compression.
Is the impeller peeing water...
Mine is the old, all metal, push/turn type.
But the concept is the same. The inside can get plugged up with crap.
This may not solve the OP's problem but it's wise to check the easy/cheap things first.
I'll 2nd that.
I had a similar issue and found clear plastic shards in my filter. It was the fuel lines between the tank and the quick connector at the engine. They are known to have a clear inner liner that degrades and falls apart.
I replaced them and the primer bulb. But the problem...
Hate to see you chasing complicated/expensive things if the problem is something simple like that. It will take very little time and effort to rule it out.
All above assume that your oil injection is working properly.
Break-in method opinions vary almost as much as which oil to use.
A quick search will have your head spinning wondering which method is "correct". ;-)
There's also a school of thought that extra oil prevents the rings from breaking...
If the qd were obstructed I don't think that anything would be viewable in your clear hose. It's not going to allow air intusion. It would just restrict how much fuel the pump can pull through it.
