She's been progressively becoming more cold-blooded, and high RPM power is lacking.
I synched the carbs with no real improvement. I checked the valves - all were within spec. I took the carbs off expecting gunk, but they were clean as a whistle. The ONLY problem I found was that the o-rings on the fuel rails were cracked, and I've replaced all of them.
She's running rich (hence the cold-blooded problem), so the cracked o-rings wouldn't have caused that. All carb boots and boot o-rings are in good shape and sealing well. She'll fire right up at half choke, and will run fine at moderate RPMs once warm. At higher speeds in higher gears, there just isn't any real power there. And she takes FOREVER to warm up. Once warm, she cools down quickly and I have to warm her with the choke again - AND IT'S THE MIDDLE OF SUMMER IN CALIFORNIA!!!
I just put the carbs back in and am trying to get the air mixture screws sorted. Here's the skinny:
'83 750 E - stock airbox and filter.
Supertrapp 4-1 (header's a bit beat up underneath).
Jets
Mains - 122.5 (OEMs are 117.5)
Pilot - 37.5 (OEM)
Main Air Jet - 155 (manual claims OEM is 1.7???)
Of course, I didn't write down the number from the needle jets. And another thing - what the hell is meant by raising the needle jet or needle jet clip by a position???? Correct me if I'm wrong, but there are no needle jet positions on my carbs - there is an indexing pin which aligns the needle jet, then a washer and the main jet screws into the needle. Once you snug up the main jet, the needle jet is pulled all the way to the top of the passage - no adjustability....
Help? Please? The mains are as I found them - I did not rejet them, so I don't have the OEM jets - and (of course) my manual doesn't list the adjustment for the idle air screw, so I hope someone can help me there, too!!!!
I'm about to go back out and clean the plugs, then run and read them....
Thanks in advance,
-Q!
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