Time to give up?

[freddyray21]

Re: Time to give up?

just on a lark put a new set of plugs in it if you haven't already. I just fought with a 7.5. It was running good but the lower unit was full of water. After replacing the seals in the lu it wouldn't start, but would just foul the plugs. I had good spark too. Changed the plugs because the ones in it were fouled and it started on the first pull and ran like a champ

 

[jbjennings]

Re: Time to give up?

If only one plug were getting good spark and you squirt fuel in the carb., you should eventually get it to crank I would think, unless as said, you're getting way too much fuel in there already and flooding/killing the spark. That has to be the problem, either not enough spark or way too much fuel. With 65 and 70 lbs., it will run, just may not handle a load.
Just my opinion,
JBJ

 

[kynolan2183]

Re: Time to give up?

At on time I had one of those plastic mini bass boats with a 5hp motor I got off ebay for 200 bucks. Got it from a guy north of dallas that goes by WINGFOOT. That is all he does is rebuilt motors and sell them on ebay.

Point of the story is that the mini bass tracker did the same speed with a five horse as it did with a 40 pound thrust trolling motor. I bet the same would be true for your little boat.
Spend a hundred bucks on a used transom mount trolling motor on ebay and buy the EVER MAX trolling battery (yellow color) from Walley World and be done. Sell the 3 hp to recover your losses and get out fishing.

Just a thought
Kyle

 

[wavrider]

Re: Time to give up?

Going out on a limb here but everything else seems to be working as it should be.

Good spark, decent compression, good fuel flow on intake.

since this is a 2 stroke I usually do not worry about exhaust as it is a given, but in this circumstance maybe not. you have to be able to expel the exhaust or no engine will run.

Is it possible that the exhaust housing in the lu is stopped up or clogged?

don't know how to check it unless just drop the lu and then try to start the engine.

Like I said going out on a limb but at this point it might be worth checking.

 

[byordy]

Re: Time to give up?

If you have fuel, compression, and spark at the proper time it will run. You evidently have spark; is it at the correct time? Perhaps the flywheel key has sheared or something else has happed to affect timing.
Since it pops when the wires are reversed you must have spark, fuel, and compression; I would try and prove that the spark actually occurs at the proper time.
Bill...

 

[F_R]

Re: Time to give up?

Clogged exhaust is a real possibility depending on where it was stored. Dirt daubers love the opportunity to plug up open holes. Nah, my dumb thinking, I guess. Don't reckon dirt daubers work up north in the winter time. Anything else crawl in holes to get keep warm? A snake crawled in my mother's well pump one chilly night. Result: ground snake meat when the pump started

 

[wavrider]

Re: Time to give up?

Never had a snake crawl into the pump, but down here in good olde FL had a few ant colonies decide thay wanted to invade the points on the pressure switch, darn things were everywhere.

 

[wavrider]

Re: Time to give up?

TTT

Interested in finding out if you got this outboard running yet? Please keep posted. I have basically the same engine and am interested in finding out what the problem was. thanks