volvo penta omc ford 302 wont start

[Erickson13455]

I have fourwinns 190 horizon. Engine cranks but will not start. Took out boat for 1st time and it ran slugish for 30 minutes. Would not go full throttle, maxed out at 2000 rpms. Finally it opened up ran good. Thought just some old gas, varnished up, but cleared out and all is good. Next weekend it will crank, but never fires up.
I tried.a new fuel filter, put hose to fuel pump in a gas tank to rule out bad gas.
I put a plug on the block and could see a yellow spark. The battery is new this year.
I took distributor off and lightly sanded contacts, they looked ok, not really corroded.
Do i need to have water muffs on intake to run when i am testing.

Please help, thanks.

 

[alldodge]

Do i need to have water muffs on intake to run when i am testing.

Howdy

Yes you need muffs on. Even if it doesn't start your putting wear on the impeller, and if it does start you will burn it up in seconds.

Yellow spark is not very good, you need a blue or white
When the throttle is pumped do you see gas squirt down the throat of the carb?

 

[Erickson13455]

So if i need a better spark what needs replacing, distibutor cap and rotor, or something else, read some posts about a solenoid or ignition coil. Is the ignition coil where the wire goes to center of distributor cap.. The plug i pulled and put on the manifold looked clean. I pulled the stainless fuel line off the pump that goes to injectors and gas was coming out when i turned the key.. the engine will not crank if i take the throttle out of nuetral,

 

[alldodge]

What motor do you have the model number?

the engine will not crank if i take the throttle out of neutral,

The reason it will not crank is because there is a neutral safety switch in the handle or shift plate. It keeps the motor from being started in gear. The throttle handle should have a button on the side which is depressed and then the lever can be moved while it stays in neutral.

Being fuel injected moving the throttle much more then 1/2 can cause the injectors to stop firing.

 

[Erickson13455]

Engine model number is 50FAPNCA. It should be a 1996 omc ford 302

 

[alldodge]

That helps thanks,
I was able to look up parts for your motor and it has two fuel pumps, low and high pressure.
http://www.crowleymarine.com/johnson-evinrude/parts/56697.cfm

Item 26 in link below is the air control valve
http://www.crowleymarine.com/johnson-evinrude/parts/56712.cfm

Can you move the throttle forward in throttle only mode and have it fire up?

 

[Erickson13455]

Out of town tonight will try tomorrow, what about a poor spark fix.

 

[alldodge]

Out of town tonight will try tomorrow, what about a poor spark fix.

Even with weak spark it should run but not that well. Pour spark is from plug wires, coil, points and condenser and plugs. Can be anyone of them or all, just depends on what has issues

 

[Erickson13455]

OK, I tried the full throttle start. I found the button on the pivot of the handle. Crank but no start.

​So If I want to guess spark is poor, anyone got a part number for a coil, cap and rotor to fix starting.

Thanks,

 

[alldodge]

An EFI motor when the handle is placed at more the 3/4 throttle (can also be more then 1/2) the ECM turns off the fuel injectors. This is done for a flooded motor. Try cranking the motor with a 1/4 or a bit more.

The parts to your motor is in the link below
http://www.crowleymarine.com/johnson-evinrude/1077.cfm?mdl=PFZZZ6

 

[Erickson13455]

i will pick up a distributor cap, rotor, and ignition coil at local auto parts store and give them a try. I will also try the 1/4 throttle start up.

 

[Erickson13455]

I put the coil on first and it didn't help. Put on new rotor and cap and it is running. Although now the alternator bearings went out and it was smoking . Can I get a st​andard alternator from auto parts store or do I need a Marine one?

​Thanks,

 

[alldodge]

I put the coil on first and it didn't help. Put on new rotor and cap and it is running. Although now the alternator bearings went out and it was smoking . Can I get a st​andard alternator from auto parts store or do I need a Marine one?

​Thanks,

---- NO ---- has to be marine. You can rebuild the one you have, parts are mostly easy enough to find

 

[Erickson13455]

Well the alternator spins really easy, but the belt is really worn out. The pulleys are rusty looking on the alternator and main idler pulley. I read in another thread about pitted up rusty pulleys eating belts. Should I just sand the pulleys down and that will solve my belt smoking and squealling problem.

Thanks

 

[alldodge]

Take a wire brush/wheel to remove the rust