200 yammies overheat in reverse

[xltier]

just picked up this boat and only rode it forward on test drive.it is a 25ft. sea swirl with 2 200h.p yamahas.it runs fine except when using reverse.the temp. goes up and the steam starts coming out.will cool down rite down in forward.thanks for any info.

 

[rodbolt]

Re: 200 yammies overheat in reverse

hello<br /> when was the last impeller and pressure valve gromet service?

 

[xltier]

Re: 200 yammies overheat in reverse

not sure.just got the boat.is that what you think it could be.im familiar with impeller but the pressure valve grommet is throwing me off a bit.any advice r.b.admiral sir!!

 

[rodbolt]

Re: 200 yammies overheat in reverse

if your unsure its time for an impeller kit,t-stats and a pressure valve groimmet. carefully clean the grommet pocket and dont allow the new grommet to fall into the cavity. when doing the pump remove the rubber dam and the metal holder and clean/replace as nessasary. the 200,like all v6 2stroke yams, has a pressure control valve in the exhaust cover. if it leaks your first indications will be overheat at idle speeds.

 

[xltier]

Re: 200 yammies overheat in reverse

thank you very much for your response.i will check it all out as u suggest.do u know of any problem with overheating in reverse only.takes ab out one minute.the counter rotate engine is worse.put it in foward at 1500 rpm and it calms rite down.can idle forward with no problems.anything to do with the bubbly water it takes in while in reverse.hhhmm.thanks again.