A little history... This motor has run just fine @ high end, but with a rough idle... I pulled the carbs apart and rebuilt them... Once pieced back together, it ran worse... So I threw up my hands and took it to a local mechanic who diagnosed the engine as not firing on #3 and #5 cylinders... Which shouldn't be caused by a carb problem... He checked the #3 cylinder for damage and said he found "gaulding"... Now what that means I have no clue... But he tested compression on the motor and it checked out good on all 6 cylinders... SOOOO... How can #s 3 & 5 not firing be attributed to problems with the cylinder and piston if the compression is good??<br /><br />Someone please throw me a bone... as he quoted $2,687 to replace the powerhead... plus $500 labor and $500 for a new VRO assembly... so basically $3,500 to make a $2,000 motor work right... Makes no sense to me.... <br /><br />Thanks.
) Here are the readings...<br /><br />#1 - 90<br />#3 - 85<br />#5 - 88<br />#2 - 90<br />#4 - 88<br />#6 - 88<br /><br />I tested the spark by removing every plug and grounding it to the block to see spark to the plug... and all plugs had spark... and all of them appeared to have the same amt of spark... and... all of 6 of them were wet... I was able to get the motor started and running... and removed plug wires one at a time... and indeed #3 and #5 are the culprits... BUT... here is the fun part...<br /><br />Pulling #3 wire made no difference when pulled off... but when put back on, that cylinder came to life for about a sec and went out again... same with #5... <br /><br />seems kinda odd.... <br /><br />I'm anxious to hear the ideas...<br /><br />Thanks so much!