My friend has a yamaha superjet. It has a problem starting. It has a new jetworks fully charged battery, it has spark but wont turn over good. When the plugs are out it turns over great but with the plugs in it turns over slow. It will however start easly with one spark plug in. I check the compression 125 with only one plug in and 50 with both plugs in. This is obviously because the engine wont turn over fast enough. I belive it must be the starter. Does anyone have any suggestions. Also this engine is a high compression engine 760 cc.
We may try putting my newer starter in to see if this fixes the problem.
Thanks
We may try putting my newer starter in to see if this fixes the problem.
Thanks