Stroking myself twice
#1
Senior Member
Thread Starter
iTrader: (14)
Join Date: Oct 2006
Location: South East Florida
Posts: 677
Total Cats: 6
Stroking myself twice
Mid to early 90's 3.3hp mercury.
I can't get it started. Replaced the plug and sprayed starter fluid- not even a cough. Spins freely. Ran perfect and put in garage a few years ago.
What's my problem? How do I lose spark from just sitting there?
I can't get it started. Replaced the plug and sprayed starter fluid- not even a cough. Spins freely. Ran perfect and put in garage a few years ago.
What's my problem? How do I lose spark from just sitting there?
#3
Elite Member
iTrader: (21)
Join Date: Jun 2007
Location: Rochester, NY
Posts: 6,634
Total Cats: 1,284
I had a 5 HP Volvo/Penta that I used for an inflatable. It was VERY fussy about the gas. Just a bit too much and it flooded, any less and it leaned out. It also had to be fresh; a month old was enough to choke it.
Dump out the gas if you haven't already. Drop the float bowl and clean it out. Spray the hell out of the jet(s) with carb cleaner. Soak it if you can. Blow it all out with air and fill with fresh fuel. Crank it until your arm is sore and verify it's getting the gas through. That is usually enough to do it.
Dump out the gas if you haven't already. Drop the float bowl and clean it out. Spray the hell out of the jet(s) with carb cleaner. Soak it if you can. Blow it all out with air and fill with fresh fuel. Crank it until your arm is sore and verify it's getting the gas through. That is usually enough to do it.
#4
Slowest Progress Ever
iTrader: (26)
Join Date: Oct 2007
Location: The coal ridden hills of Pennsylvania
Posts: 6,028
Total Cats: 304
My push mower does this thing where I pull the cord and it fires right off, then shuts right off...wtf?
/ thread jack.
Not sure on your problem...be certain you're getting spark and fuel?
/ thread jack.
Not sure on your problem...be certain you're getting spark and fuel?
#5
Elite Member
iTrader: (21)
Join Date: Jun 2007
Location: Rochester, NY
Posts: 6,634
Total Cats: 1,284
Also, when I was having problems getting it to start before I could adjust the carb, it ran pig rich and flooded out the plug. Wet plug= no spark. To fix it, I'd pull the plug, dry it off with a rag and heat it with a lighter. That heat made it warm enough to evaporate the extra gas until it fired. Then I could adjust the mixture to where it ran right.
#8
Cpt. Slow
iTrader: (25)
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 14,439
Total Cats: 1,214
The coil on my Toro died after 5 years sitting outside under cover. Worked flawlessly until it sat in rain for 2 months.
$56 bought me a coil, plug, air filter, and cutting twine for my weed wacker at a local lawn mower shop. I wish I drove something so cheap on the road.
Edit: BTW, I found the dead coil by wrapping a wire around the plug threads, and then bolting the other end to the block somewhere. I then put a giant socket on my drill and used it to crank the top of the pull start, so I didn't have to yank it a bunch. Very easy to diagnosis.
$56 bought me a coil, plug, air filter, and cutting twine for my weed wacker at a local lawn mower shop. I wish I drove something so cheap on the road.
Edit: BTW, I found the dead coil by wrapping a wire around the plug threads, and then bolting the other end to the block somewhere. I then put a giant socket on my drill and used it to crank the top of the pull start, so I didn't have to yank it a bunch. Very easy to diagnosis.
#14
Elite Member
iTrader: (21)
Join Date: Jun 2007
Location: Rochester, NY
Posts: 6,634
Total Cats: 1,284
I would disassemble anything like that plate with the bolt, because it looks easy enough to do. Don't be pressing anything apart. That power plunger looks to come out with that brass nut. It may be gummy in there.
How far you go depends on how gummed up it is. It really doesn't look too bad. Get a can of carb cleaner (hint - brake cleaner is not the same stuff) and soak the hell out of it. If it runs off clear, it's clean enough. If it looks like it's still removing varnish, hit it again. Repeat as needed. Blow it out with compressed air, and reassemble.
I find it amusing that in these days of fuel infectors and custom ECUs that knowing how to rebuild a carb is nearly a lost art.
How far you go depends on how gummed up it is. It really doesn't look too bad. Get a can of carb cleaner (hint - brake cleaner is not the same stuff) and soak the hell out of it. If it runs off clear, it's clean enough. If it looks like it's still removing varnish, hit it again. Repeat as needed. Blow it out with compressed air, and reassemble.
I find it amusing that in these days of fuel infectors and custom ECUs that knowing how to rebuild a carb is nearly a lost art.
Thread
Thread Starter
Forum
Replies
Last Post
graexodus
Miata parts for sale/trade
9
10-25-2015 03:34 PM
bassimo
Engine Performance
6
02-09-2011 09:19 PM