Honda 90 major probs please help :)

[Mr Mojo Risin]

Hi there, new to this forum so any help would be most appreciated as im in a bit of a fix here.

Was about about 6 miles out in my boat last night and driving about 3700rpm when the engine (honda 90 1999 model i think) suddenly lost power and changed tone into sounding basically like a bag of crap. It went loud noisey (not clunky just noisey)and i switched it straight off and gathered my thoughts then started it and revved up (to it to about 2500rpm maybe) for about 10-20 secs to try decide what the noise was. I then switched it back off and lifted the cover and checked the dipstick only to find that the oil was pretty frothy/going whitish which made me panic a little as ive just spent more or less all my savings on the boat/engine and know when oil goes like this its not good.

Any ideas as to whats wrong and what parts i could potentially need to repair it? Im capable of fixing minor problems but havent got a clue about boat engines.


I know im new here so please me for being a bit ignorant and wading in with some questions but im really in need of some help from people who know about these things. Any more details needed please ask me and i'll fill you in. cheers\clipart{thumbs_up}

 

[sunbird 18]

Re: Honda 90 major probs please help

Sounds like you have water in the oil. It could be signs of a coolant leak somewhere, bad headgasket, or oil dilution caused by excessiv idling in cold water.

Step1) Drain the oil, refill and keep a close eye on it. If it becomes milky again or if the oil level increases rapidly, you have a leak somewhere. Hopefully it is something simple.

 

[Mr Mojo Risin]

Re: Honda 90 major probs please help

hello and thanks for replying

the thing is im not sure by if i should be starting the engine again until i know exactly whats wrong as it really did sound bad although not major clunking it was quite bad/rattly sounding i suppose.

the tone of the engine changed quite dramatically as soon as the power loss of probably 70% at least. Its definately water in the oil but im just trying to work out why. the big power loss made me think i have cracked the head or something but as i said before i dont really know that much about them. What would make this power drop and the noise? Could it just be a gasket? Would the engine still run if it was something majorly wrong with it (ie, needing 1000's spent on it)?

cheers in advance

 

[Mr Mojo Risin]

Re: Honda 90 major probs please help

bumpety bump bump

 

[python287]

Re: Honda 90 major probs please help

Water in the oil = blown head gasket = and possible big time engine damage. You need a OB mechanic to tear it down and discover why. Much cheaper to fix it than try to replace a 90 HP Honda