Re: 1979 140 mercury idles rough stalls when i put it in gear
weslwl, sorry for this intrusion on your post, but would like to respond to stevee and to also anwser what I meant on my responce to "The Reed Block Syndrome". First stevee,I have been to Mercury service school many times, I did not just attend but became a master mechanic back in 1980. In the schools I attended at Fond Du Lac, they wuold not even discuss problems with past production motors, that may have changed, I will ck. and find out, if wrong about that I will apoligise. That being said I have only seen 1 engine out of 100s that a have rebuilt with a labyrinth seal in the reed blocks worn out. It would be difficult as the crank does not touch the seal and could only in the case of a bad main bearing.(the fuel, oil mix is what inhances the seal on the reed blocks labyrinth seals. I have seen alot of broken reeds and a few broken reeds blocks. Usally a motor that will idle on a hose but not in the water needs carb attention first, some have a lower main seal out, In the case of the side port pistions the cyl taper will cause that type of a problem, but you don't start with the reeds inless you are exploiting the customers.// weslsl, that I meant in my statement the "Reed Valve Syndrome" was that some places that are not to apt at trouble shooting will tell you that it is a reed valve problem, give you a price on a repair and then after tear down, come back with a revised est. Now the engine needs to be rebored, new pisions and etc. a complete rebuild and some do, many others were torn down, by 'Techs" that did not have a clue of that the problem with the engine was, but in most cases a complete rebuilt will repair the problem. But I think most mechanics have had to repair some of these engines, that were give up on by the orginal repair shop.--Bob
