90hp Inline 6-Surging wide open when started.

[Black Max]

I pulled this 90 out of storage and have been workig on it for a few months now. I came to crank it up for the first time last week and it immediately cranked and reved constantly wide open until I killed it. Then cranked it again with same result wide open, not even close to idle. Pulled the carbs which have been thoroughly cleaned, re-adjusted the floats, fresh gas, and changed the needle and seats in all three. Yesterday cranked it to see if I had solved the problem, but disappointed with the same result of immediate surge to wide open rpm range. Throttle cable was disconnected but problem wasn't solved. Any ideas?

 

[timmathis]

Re: 90hp Inline 6-Surging wide open when started.

When you open and close the throttle is the butterfly's open and closeing all the way?<br />Best I can remember clams said in a old post something about puting a spring on the throttle arm to get it to close all the way I think.. Not sure though.. I thought I might mention that. Maybe Clams or someone may step in with more solid information. I know when you start my inline with the throttle cable off it will rev real high. Have you started it with the cable on?

 

[Black Max]

Re: 90hp Inline 6-Surging wide open when started.

Yes, I started it the first time with the throttle cable connected, and made sure the throttle arm was completely in the idle position.<br />I sure can use any advice, the tower is almost ready to roll, I just have to get all the bugs out.

 

[Clams Canino]

Re: 90hp Inline 6-Surging wide open when started.

Go through the timing and synch post I did. This cannot happen if you do that 1st.<br /><br />-W

 

[Black Max]

Re: 90hp Inline 6-Surging wide open when started.

Thanks Clams. I found the post. Is is possible to rent a timing light and dial caliper from Autozone or Napa. I seemed to have misplaced mine.

 

[Clams Canino]

Re: 90hp Inline 6-Surging wide open when started.

You can get a timing light for about $25 at Sears. You can find TDC to set the pointer without a caliper. The timing sticker outta be already on the flywheel.<br /><br />-W

 

[timmathis]

Re: 90hp Inline 6-Surging wide open when started.

Thanks Clams, I knew you would come to the rescue!!. Tim

 

[timmathis]

Re: 90hp Inline 6-Surging wide open when started.

Advance Auto has a loan a tool program, All you have to do is leave a deposit on it and when you bring it back you get all your money back. You can't beat that deal! Tim

 

[Black Max]

Re: 90hp Inline 6-Surging wide open when started.

Perfect, someone gave me a $50 gift certificate to Sears. Yes, the decal is still on the flywheel. Will "Time and Synch" Friday and post my results. Thanks for the help!