1957 evinrude 7.5 (help)

[merkdawg]

1957 evinrude. Just got this motor running in a barrell and it was running good without the clamshell hood on it. Put the hood on it and I can't get it to rev up. Raise up one side of hood and it runs fine? What could this be?

 

[Joe Reeves]

Re: 1957 evinrude 7.5 (help)

There is no engine manufactured that will run properly in a barrel if the hood is on. That results in having the carburetor draw in the engine's own exhaust fumes.

 

[highcountry]

Re: 1957 evinrude 7.5 (help)

First guess is the float level is to high, the cover is working a little like a choke?

 

[highcountry]

Re: 1957 evinrude 7.5 (help)

Good point Joe.

 

[merkdawg]

Re: 1957 evinrude 7.5 (help)

Hey Joe thanks for the response. Thats kinda what I was thinking because there was alot of smoke. kinda like it was choking the motor out.

 

[merkdawg]

Re: 1957 evinrude 7.5 (help)

Oh yeah. thanks highcountry.didn't want to leave anybody out. This is a great forum.

 

[kbait]

Re: 1957 evinrude 7.5 (help)

Make sure the plug wires will move freely throughout the throttle range (engine off in forward gear) when you have the cowling attached. If the side you raise up is the wire side (it is), perhaps the wires stop the throttle when they bind on the cowling?