1997 challenger bogging

[sterlingmarlin30]

787 single engine boat, won't rev past 4000, new plugs, clean raves, idles fine,first time out this season, any ideas???

 

[LouDoo]

A couple of questions. Do you still have grey tempo fuel lines? What's the engine compression?

Lou

 

[Murph_13]

Check to see if your water regulator valve (looks like a RAVE valve) on the water box/muffler is leaking. A leaking water regulator valve can cause your condition.

 

[sterlingmarlin30]

fuel lines are black, I have no way to check compression

 

[Stevego]

Buy compression tester, around $30 at Canadian Tire:
http://www.canadiantire.ca/AST/brow...6P/Equus+Compression+Tester+Kit.jsp?locale=en

 

[Murph_13]

I'd check the water regulator valve for leaks before compression testing...you were riding the thing, seems fine but flatlines at 4000RPM if I understand your condition right.

 

[sterlingmarlin30]

its in the driveway and wont rev up, water reg vale doesn't leak when on the hose

 

[Phildoo]

Invest in a compression tester and test frequently. It's your best friend on a two stroke boat.

 

[sterlingmarlin30]

compression is 153 and 152, carbs removed and cleaned, not dirty, back together, starts fine, rev to 3500 and stops. and ideas?

 

[CaptSteve]

You really can not test on the trailer. If it is not in the water, it will only rev to about 3000 rpm. There is a limiter to protect the engine when there is not load.

 

[sterlingmarlin30]

that is exactly what it was thanks to all that responded, love this site