donaldboyer
Contributing Member
1988 Mercury 90hp 3 cyl 2 stroke
s/n 0b312461
We took out our boat for the first time in several months for the first trip after winter. I had fogged the engine for the winter, and had started it on the muffs to burn out the fogging oil, and also used Power Tune to "blow out the cooties".
Starting was a little hard, but not a big concern It idled rough and stalled a few times which is unusual for this engine - it idles fine usually.
I spoke to the previous owner who told me he hadn't ever changed the spark plugs! So the ones that are in it now are the ones that it came with from the factory.
I need to sort this rough idle, is changing the spark plugs the best option?
Also.... the next time I'll have it running is when we will be away on holiday with no internet..... so it the new plugs don't fix this problem, what should I try next? Adjust low speed screws or something? I'd like to have a couple of options that I can try instead of having a trial and error over several trips away in the boat!
Thanks!
s/n 0b312461
We took out our boat for the first time in several months for the first trip after winter. I had fogged the engine for the winter, and had started it on the muffs to burn out the fogging oil, and also used Power Tune to "blow out the cooties".
Starting was a little hard, but not a big concern It idled rough and stalled a few times which is unusual for this engine - it idles fine usually.
I spoke to the previous owner who told me he hadn't ever changed the spark plugs! So the ones that are in it now are the ones that it came with from the factory.
I need to sort this rough idle, is changing the spark plugs the best option?
Also.... the next time I'll have it running is when we will be away on holiday with no internet..... so it the new plugs don't fix this problem, what should I try next? Adjust low speed screws or something? I'd like to have a couple of options that I can try instead of having a trial and error over several trips away in the boat!
Thanks!