2001 DF70 won't go over 3000rpm

[wmhester]

copster​

New member​

• 34 minutes ago
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• #1

I have a df70 that I tore down and cleaned out all the water jackets. I replaced all of the gaskets and head gasket and put it all back together. The motor after putting back together has 140lbs compression on all cylinders. New plugs, vst gone through, throttle body cleaned and all electrical reinstalled. Now when I push the throttle it only will go to 3000rpm. I have tested the neutral safety switch in the throttle box and on the motor. After starting the motor I unplugged the NSS and still nothing.
I have no beeps or lights on the dash until I unplug and of the connectors on the ECU. I had someone attempt to hook it to the Suzuki computer and it would not even show that it was connected. All sensors have been tested for resistance and all check out.
Only thing that I can figure is the ECU has gone bad. Also I remember having either a white wire or grey wire that was connected to the battery at some point but not sure.

Any help is greatly appreciated.

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[wmhester]

I found that my timing was around 60 tdc. I may have turned the flywheel when I was moving the motor around when I was working on it. I found this by accident when I lined up my CAM marks and put the cover back on. I saw the alignment marks where way off. I then ran it at 1000 rpm and udes a timing light. It showed more than 40 tdc over. So I took off the belt and moved the Flywheel back to 10 tdc and wow... It worked. Thanks for the replys. I just wanted to get an update to help anyone else.

 

[99yam40]

thanks for the update , I do not think anyone could have guessed that was the problem
I am sure you will double check things to make sure from now on.
and others looking to solve similar problems will need to double check things they did also if they read this post