I have a Colortune question. The Colortune instructions say for pre-1985 engines you adjust the pilot mix screws until you get yellow or orange...
Here's a link to Carmo's USA office. THey can test, repair or sell you a new TCI. www.carmousa.com
OK, I've just reassembled the carbs and racks and put them back in the Seca (with the usually swearing). I put the auxiliary fuel tank on and...
Bellevue
I stand corrected. Silicone grease can be solubilized in organic solvents, like gasoline. I don’t know how quickly, but then so should assembly...
I used just enough to slip the parts together. However, when you push the fuel line with the O ring in, it wipes the lube into a ring of lube,...
I used it to lube the fuel rail “o” rings to be able to slip the rail tube into the carb body. It’s supposed to dissolve in the fuel. It just...
Ok, I think I’ve solved the idle issue. I’ve pulled and disassembled the carbs yet again and found that there was black globs of assembly lube...
Yes, when I had the carbs apart I followed Lens advice, got a wire and made sure they were cleaned out. A pipe cleaner was useful to clean the...
Yes, I can’t get it to stay lit. I can only get it to idle with the choke on, but I wouldn’t take it out on the street. Besides my driveway is...
Thanks, Jetfixer. I was getting very frustrated after a year of putzing with this. My Father was a truck mechanic, so I grew up working on cars....
Thanks for the idea. I’ve already cleaned all the TCI contacts, then took the cover off, inspected the solder joints and reflowed one that looked...
OK, thanks Rooster. I thought this may be an indication of a failure in the TCI. But you’re right, all cylinders were running so it must be...
Yes
I’ve rebuilt these carbs half a dozen times. They don’t do nothing for me.
Found that test online after having a carb problem turn out to be a slipped diaphragm.
I believe the oval connects to the chamber under the diaphragm. If the diaphragm seals the higher pressure under the diaphragm lifts the piston....
I have an auxiliary tank I use so the tank & petcock are out of the equation. I was going to try the Berrymans but wasn’t sure if it would wreck...
I now do that test, but blowing into the oval hole.
Jetfixer, I did a full tear down of the carbs, taking all apart down to separate pieces ( seals, emulsion tube, inlet valve seat and screen, jets...
Thanks, Franz
Just did compression test cold, got from 140 to 149psi across the cylinders ( did it cold because some cylinders were not firing then). But even...
Checked valve clearances last year. They were in spec.
Yes, I’ve done that 2-3 times with the colortune and manometers. There are probably some things I was too bleary eyed to remember.
Rooster53, This is Mark Wyzgala and I've just posted a write-up of my 1982 Seca 750 Woes on the XJ technical Chat forum under "1982 Yamaha Seca...
1982 Yamaha Seca 750 Loping Idle OK, long story, get something to drink, then read this missive. I put up my 1982 Seca 750 about 17 years ago in...
And I can do anything needed on the bike, but there are times I wish to trade money for time.
Any newer reviews of competent places to service a 1982 Seca 750 around Seattle? A place that has someone who knows theses bikes?
When you have it together and running try spraying the intake manifold boots ( engine side of carbs) with carb cleaner. I looked at my boots and...
I’ve been having very good service from XJ4EVER. They have all of the parts no one else has for my 1982 Seca 750, along with good write ups on...
