motor struggle

[jimbosplumbing]

Hi, could some 1 tell me y a motor would struggle to start in the water but when on land to get flushed starts first time every time, Cheers matt

[stevej]

you flushing it with ear muffs?

if so simple back pressure on the exhaust when its submerged ie in the water

tunning issues, which could mean almost anything sorry :)

[finga]

Does it start easy for the first time and then hard afterwards when it's warm in the water??
If so is the motor over 7 years old??
If so then top and bottom seals might be cactus.
What motor is it??

[jimbosplumbing]

yeah using earmuffs when on land, its a 30 tohatsu 2003 2 stroke, when warm it started ok a couple of times but if left for five minutes or or more its a bit difficult again.

[finga]

when warm it started ok a couple of times but if left for five minutes or or more its a bit difficult again.
Was that on land?

[FNQCairns]

Is each start in the water after a say a 2 week layup, yet each start on the muffs is after a trip on the water.

How is the compression, if ok it might be time for a carby and associated linkage etc tuneup.

cheers fnq

[Steeler]

Hi Matt.I'm with finger on this one,thinking quite possibly seals.I had an old tower of power inline 6 cyl Merc that started doing the same thing.An inspection of the plugs particulaly the bottom one showed signs of corrosion,water entering inside.Best to get checked out and a compression test done.Hope this helps.

Cheers Steve

[Steeler]

Sorry Finga,always was a shirt speller !!!!.

[Donny Boy]

Had the same thing with my Johno ( 140hp 1990 V4 OMC )

It was back pressure........we adjusted the idle and a quick tune...........perfect.

[jimbosplumbing]

Thanks everyone for your replys will give a couple of things a try and get someone to have a look at it

[finga]

Had the same thing with my Johno ( 140hp 1990 V4 OMC )

It was back pressure........we adjusted the idle and a quick tune...........perfect.
My mate Johno had the same problem.
We just kept him off the home brew and stopped the onion gravy on his mashed potatoes ::)