1966 9.5 Evinrude / Model 9622A / fuel problems ?

[spg59]

Hi,
I just tried the motor out on the lake today and the carburetor seems to be starving for fuel. After a tune up and carb. kit she starts right up but when I try to put her in gear she stalls out with any kind of slight advancement of the throttle. It still has the old tank and I noticed at first that fuel was seeping at the primer bulb. I reclamped that and that was fine. Then I noticed that I had a bit of a drip at the motor connection and tank connection. I figured if she's dripping fuel she's probably sucking air too. The primer bulb never seemed to stay hard. Is this enough to cause the problems I'm having or should I remove the carburetor again and look further. You guys are the bomb, so fire away. Thanks

 

[Wingedwheel]

Re: 1966 9.5 Evinrude / Model 9622A / fuel problems ?

The problem you described could be caused be a leaky line or bulb. I'd replace those, and even if its not the source of your problem it sounds like they need to be replaced anyway and it couldn't hurt.

 

[highcountry]

Re: 1966 9.5 Evinrude / Model 9622A / fuel problems ?

Have you cleaned the screen in the fuel filter? Mines a 65 so I don't know if they are the same.

 

[spg59]

Re: 1966 9.5 Evinrude / Model 9622A / fuel problems ?

Hi,
I just tried to run her in the test tank. If I give her a little shot of fuel / oil mix in the carb. she starts right up and runs for a few seconds. I replaced the tank fuel line and primer bulb and she definitely has better pressure with no leaks at the motor or tank connection. I disconnected the fuel line from the fuel pump to the carburetor and I noticed with the tank fuel line connected and pressurized that I have steady fuel coming out the fuel line from the fuel pump to carburetor. I'm not sure if that's right. I thought I should only have fuel from the pump to carburetor if the engine was turning. Maybe the problem is with the pump and I'm flooding the carburetor out. What are your thoughts. Your help is greatly appreciated.

 

[flintcreek]

Re: 1966 9.5 Evinrude / Model 9622A / fuel problems ?

You will normally have fuel from the pump to the carb running or not. Did this running out of fuel start after the carb rebuild? If so and you put the little clear to white plastic sleeve on the idel needle, pull it out it, it will cause this problem. They send this part in alot of carb kits, but you do not need it. I have found that a small crochet hook works best for pulling it out.

Flintcreek.

 

[dockrat100]

Re: 1966 9.5 Evinrude / Model 9622A / fuel problems ?

I have a 1967 9.5 that had similar problems, but my solution was a fuel pump rebuild kit. The little diaphragm in my fuel pump was pretty hardened, so it was not able to do its thing.

I understand that you had fuel getting to the carb if you squeeze the bulb, but did you pull the fuel line going from the pump to the carb and see if it is pumping fuel when you pull the starter cord? That is how I determined my fuel pump was shot. $15 and an hour spent with very small parts.

 

[spg59]

Re: 1966 9.5 Evinrude / Model 9622A / fuel problems ?

Hi flintcreek,
Thanks for responding. No I did not use a plastic sleeve in the idle needle.

 

[spg59]

Re: 1966 9.5 Evinrude / Model 9622A / fuel problems ?

Hi dockrat100,
No, I just tried it with the fuel line pressurized. I'll try your tip tomorrow or the latest this weekend. Mother's Day is this weekend so my wife changed my priorities. Go figure. Thanks again.

 

[Wingedwheel]

Re: 1966 9.5 Evinrude / Model 9622A / fuel problems ?

If you replaced the float you might need to check the setting. Its important that its set correctly or you could be starving the carb for fuel when you increase the throttle. Also take the line loose from the carb and see if you're getting fuel when you crank it. If not you need to replace the pump diaphram.

 

[spg59]

Re: 1966 9.5 Evinrude / Model 9622A / fuel problems ?

Hi Wingedwheel,
What do you mean by check the float setting? I'm still having the same issues with the carb. I spoke with the local evinrude marine tech. this week. I verified that the float was installed correctly. I also explained to him that the carb. kit that I installed came with a float needle that has a recess at the bottom to attach a wire clip that also attaches to the float hinge arm. However the original one removed did not have a recess for a clip. He said if the original one was the type without the clip then don't use the type with the clip. He said that could be part of my problem. I would think the type that uses the clip would be an improvement so the float valve would always open and close with float movement. I'll also check the fuel pump more this week using the pull start method. What are your thoughts on the float valve needle with or without the clip. Thanks in advance.