Advice needed

[73Goat]

My '73 40 is acting up. It is running poorly at high RPMs. It does fine up till about 50mph on the highway, but above that it is hesitating. I thought it was a fuel delivery problem so I replaced the fuel filter and fuel pump. The carb is also only about 6 months old. Does anyone have any other ideas?

 

[usmcruiser]

Check your timing.

 

[orangefj45]

have you checked the fuel filter since you replaced it?

 

[skyshark186]

Checked to see what your plugs look like?

 

[73Goat]

I adjusted the timing and that seemed to make a difference. Thanks for the advice, I am embarrased that I did not think of that. You can not see through my fuel filter, so I can only assume that it is ok. I checked the one I pulled off and could not get any rust out of it. I will pull the plugs now to see if they are fouled, and maybe that will get her running back to normal. Thanks agaiin for the advice, and if you think of anyting else let me know.

 

[usmcruiser]

No problem.

 

[65swb45]

Are you still running the original, 31 year-old gas tank? Hmmm.

 

[orangefj45]

hey. i'm running a 38 year old gas tank with no problems! then again, it was made by gifu (now yamaha) and not toyota!

 

[cjtt350]

tank

hey. i'm running a 38 year old gas tank with no problems! then again, it was made by gifu (now yamaha) and not toyota!

tank out -steam clean[ no problems]

 

[drohweder]

Don't forget to check the muffler bearing. If that freezes up you can get increased back pressure and cause the hesitation. Just my $.02