question about Joe Reeves timing method

[guy74]

Re: question about Joe Reeves timing method

Are you sure you have a problem? Its been my experience that the spark at cranking speed will be kind of thin jumping a 7/16 gap. If it's jumping the 7/16 gap reliably, then it may be OK? It's not gonna be the big fat blue spark that you see across .030in gap in a sparkplug.

 

[sat1962]

Re: question about Joe Reeves timing method

Okay this is my symptoms ill take boat out on lake it will go out fine then it will run wot then i back it off and it dies. I have to run it back in with carb silencer box and motor cover off for it to run in driveway on muffs it builds a little gas in carb throats because it kinda sneezes is nt this sign of to much fuel or is this a sign of a bad fuel pump bulb on primer stays hard except when it sneezes . Thanks for your help this has been frustrating but im persistent.

 

[wilde1j]

Re: question about Joe Reeves timing method

Sneezing is a sign of too lean running, confirmed by it running better with the silencer and cover off. Too lean may be caused by a number off things such as an air leak into the crankcase, etc. Consult the shop manual for a more complete trouble shooting list.

 

[sat1962]

Re: question about Joe Reeves timing method

Do u think this may be caused by a bad fuel pump thats about only thing that i havnt replaced on this this boat sat for 6-7 years how can i test fuel pump ive been thinking it gets to much fuel because of the build up on carbs but maybe the sneeze making it cough out fuel thru carbs? thanks for help

 

[wilde1j]

Re: question about Joe Reeves timing method

Try using the choke/primer when the sneezing is happening or squeezing the primer ball. If the sneezing stops, it's likely that you have a fuel delivery or air leak in the suction side of the fuel system. Could also be caused by crap in the carbs. You really need an OEM shop manual, if you don't have one.

 

[guy74]

Re: question about Joe Reeves timing method

That motor doesn't have recirculation valves does it? I just got done fighting a sneezing problem on an '89 V4 evinrude that was caused by a faulty recirculation valve leaning out the idle mix on 1 cylinder. I couldn't remember if they put those on the bigger 3 cylinder motors.

 

[sat1962]

Re: question about Joe Reeves timing method

I have a seloc manual but not to happy with it .I have cleaned carbs 3 times and rebuilt them im thinking maybe fuel pump. Id like to find a non vro pump for it any ideas where to get one and which one sierra only has rebuild kits.
Local marina said they replace them with a diffrent pump but i dont want to pay there top dollar for one

 

[sat1962]

Re: question about Joe Reeves timing method

I dont think it has a recirculation valve nothing in the manual about it.

 

[sat1962]

Re: question about Joe Reeves timing method

I tried the electric primer it raises rpms but if i do it too often it will die i have new fuel tank new fuel line with bulb .Will a lean problem spit out fuel from carb when it sneezes
is this normal i thought i was having a too much fuel problem

 

[sat1962]

Re: question about Joe Reeves timing method

I tried the electric primer it raises rpms but i thought the problem im having is too much fuel if carburetor spits out fuel or has drops in throat or is this from the lean sneeze .I have new fuel line and bulb new fuel tank only link in dlivery system thats old is fuel pump and fuel pump line from crank case is that where crank case air leak would be ? I also want to add that all you are very helpful thanks for great forum I would be lost without it

 

[guy74]

Re: question about Joe Reeves timing method

When the motor sneezes, it will blow fuel out of the carb that sneezes. If the rpms pick up when you first hit the primer it is definatly running lean, if it were running rich already it ould probably die as you hit the primer. When you rebuilt the carbs did you make sure to put in the gasket in the middle of the carb, around the fuel tube. #18 on carb diagram http://shop2.evinrude.com/ext/index.aspx?s1=070ca7766423e2d0b8159d41348b7d36 That might cause a lean running condition if it were not in right.

 

[wilde1j]

Re: question about Joe Reeves timing method

Get yourself an OEM shop manual ... the third party ones are NFG.

 

[sat1962]

Re: question about Joe Reeves timing method

does anyone know where to get a non vro fuel pump for my 1988 70 johnson ?

 

[guy74]

Re: question about Joe Reeves timing method

BRP Part Number: 0398399 $28.95 www.shopevinrude.com, lookup a 1988 60hp motor, it was offered as a non VRO motor. It's the type I used on my 1988 60hp, I used the old VRO bracket to make a bracket to mount the old style pump on. You also need to replace the pulse limiter with a hosebarb fitting.

 

[sat1962]

Re: question about Joe Reeves timing method

Thanks guy thats alot less than a 1988 70 vro pumpthat i dont need since i bypassed the oil and mix 50-1 so i know im getting oil

 

[jameskb2]

Re: question about Joe Reeves timing method

Hmmm....

Runs fine at WOT, goes limp and dies. Can then run with air box and cover off. WOT? Runs fine after it dies with "open air" to the engine?

Sounds like air starved. Exhaust leaking or collecting in the engine cover?