Posted by: Erwin - 16 February 2012 00:00:14
Recently i purchased a 40hp. Today I tried tuning up this 40hp motor with no avail. The compression ratio states it has about 120 psi on all 4 cylinders. It does not leak any oil. I reinsatlled today the original distributor,the original coil, original vw carb , and orginal fuel pump. everyhting works perfect, i installed new plugs and new wires. The issue is do i have the timing wrong or any ideas as when i run it at idle it runs perfect all hp is hter but when i go to drive it out around the block it feels like its lacking hp. any ideas?

Posted by: Piet - 16 February 2012 10:10:59
Is the vacuum advance working properly? You need to check this with a timing gun first IMO.

Posted by: six-o-one - 16 February 2012 11:45:44
Also, check the accelerator pump on the side of the carb is working properly.