holey carb gurus
#21
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Fixx
i always start at 1/2 then adjust the rear throttle blade for idle..never touch the front,,read the c&s post,it has good info.
if your getting reversion at 800 rpms then you may have to live with it or restrict the water coming our of the pipes and run some through hull fittings and dump the water their to..
Last edited by FIXX; 06-08-2010 at 07:50 PM.
#22
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if you go 1 1/2 turns out it will probably stumble and load up at idle..out makes it fatter and in liens out the mixture.
i always start at 1/2 then adjust the rear throttle blade for idle..never touch the front,,read the c&s post,it has good info.
if your getting reversion at 800 rpms then you may have to live with it or restrict the water coming our of the pipes and run some through hull fittings and dump the water their to..
i always start at 1/2 then adjust the rear throttle blade for idle..never touch the front,,read the c&s post,it has good info.
if your getting reversion at 800 rpms then you may have to live with it or restrict the water coming our of the pipes and run some through hull fittings and dump the water their to..
#23
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The 2 screws that go in to the metering block on the front are the idle mix screws. The one screw that acts as a throttle stop is the idle screw. No such thing as air bleed screws.
Like mrfixx and I said, start at one turn out on the mix screws and go in (cw) evenly with both until the problem resolves.
Like mrfixx and I said, start at one turn out on the mix screws and go in (cw) evenly with both until the problem resolves.
#24
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Rick, I run the idle screws in a little at a time with the boat in gear idling until the motor dies. Then back out 1/8 or 1/4 turn on each idle screw. Needs a lot of warmup to idle but doesn't load up.
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#26
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Man, r any of u guys coming to Bermuda soon..I had the same problem last season..I recently sent the carb back to be recalibrated..haven't sea trailed yet to see if it's any better..but will keep u guys updated..n i only have 12hrs on this motor..
#27
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rssteiny.. i feel your pain..mines does the same thing..idles fine.. around 950rpms, but once in gear and under load it drops instantly to around 650rpms and stumbles n wants to cut out unless i come up on the throttles..i ready to sacrifice speed for a dock friendly boat..good luck.but if u have any findings please advise..
Q
Q
#28
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The 2 screws that go in to the metering block on the front are the idle mix screws. The one screw that acts as a throttle stop is the idle screw. No such thing as air bleed screws.
Like mrfixx and I said, start at one turn out on the mix screws and go in (cw) evenly with both until the problem resolves.
Like mrfixx and I said, start at one turn out on the mix screws and go in (cw) evenly with both until the problem resolves.
You may just want to buy an upgraded carb from holley with 4 corner idle circuit since you have gone to the steeper cam to help the engine out.
#29
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I have a set of 2 year old bg demonds 875s maybe i should try them just need to do some different plumbing. Im going to play with the holleys this weekend on the water see what happens first ill let you all know.
Thanks
Thanks
#30
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