george 1100 Posted October 4 Share Posted October 4 I've managed to get my 1340 running but it's popping, hissing, farting,sucking, backfiring and running on 3 cylinders but manages to hold a rough idle once it's warm. Using a remote fuel supply. I had the carbs on and off, cleaned and cleaned again and again and put new gaskets, o-rings, needle and seats, etc. Compression test 180 all cylinders, valve clearances good. Swapped plugs in and out, ht leads and coils but no3 will not fire Haven't come across this before and quite frankly has me stumped. I really don't want to start swapping parts over from my other bikes..... Quote Link to comment
dupersunc Posted October 5 Share Posted October 5 10 hours ago, george 1100 said: I've managed to get my 1340 running but it's popping, hissing, farting,sucking, backfiring and running on 3 cylinders but manages to hold a rough idle once it's warm. Using a remote fuel supply. I had the carbs on and off, cleaned and cleaned again and again and put new gaskets, o-rings, needle and seats, etc. Compression test 180 all cylinders, valve clearances good. Swapped plugs in and out, ht leads and coils but no3 will not fire Haven't come across this before and quite frankly has me stumped. I really don't want to start swapping parts over from my other bikes..... I've got a 1052 motor which has had me stumped and slung it in the corner for a year. Very similar symptoms and diagnosis process. Finally decided to whip the head off last week end. Inlet cam was retarded 2 teeth. Not put it back together yet, still vleaning w tubes of 3bond ofvtge fasket surfaces, but I'm really hoping its the issue. Quote Link to comment
george 1100 Posted October 5 Author Share Posted October 5 I should've checked valve timing when I had the valve cover off. Might still do that for peace of mind. Going to swap out the carbs tomorrow to at least eliminate that. Anyone have any ideas on how to set up the ignition plate on a Dyna 2000 as I want to check that also? The manual is vague. Quote Link to comment
Gixer1460 Posted October 5 Share Posted October 5 (edited) 2 hours ago, george 1100 said: Anyone have any ideas on how to set up the ignition plate on a Dyna 2000 as I want to check that also? The manual is vague. I don't think they are vague - couldn't be clearer. Mount plate centred in the slots, then see photo, then check lines on rotor against the scale on the timing bracket. Adjust the plate to correct timing angle required. Very rarely to the pick-ups need moving on the plate as they are 180 deg. apart. When LED comes on, spark will occur. Oh and don't rotate engine with the cap head screw - it'll snap, many have tried and many have failed. For absolute accuracy a degree wheel and timing light is required but with a CO engine, you'll just get covered in oil from c/case opening beside oil pressure switch! Edited October 5 by Gixer1460 2 Quote Link to comment
george 1100 Posted October 5 Author Share Posted October 5 (edited) Ah, not vague now. I don't have that T piece. Edited October 5 by george 1100 Quote Link to comment
george 1100 Posted October 6 Author Share Posted October 6 Swapped the tmr40's over from my track bike and the no3 cold cylinder moved to no4. Up until now, no matter what I did, it's was always no3 that was cold . Swapped out the plug and all cylinders firing but still crap. Farting and popping and not revving clean. Also sounds like it's blowing back out through the carburettors. Quote Link to comment
Blower1 Posted October 6 Share Posted October 6 I am following this with great interest. I had the same problems on the GSX engine with cylinder no.2. I changed carburetors, coils, plugs, coil wires, carburetors, ignition unit, but no help. I haven´t opened the cylinder head yet, because the compressions were ok. When I changed to another engine, the problems disappeared. Quote Link to comment
george 1100 Posted October 6 Author Share Posted October 6 I think I've found it. Even without the centre chain gear removed, that looks like 20 pins to me. Quote Link to comment
Captain Chaos Posted October 6 Share Posted October 6 maybe it's sunday morning but that looks like 21 to me. Arrow 2 points at 1, 3 points at 21. Quote Link to comment
george 1100 Posted October 6 Author Share Posted October 6 (edited) Yes you are right, my mistake . Degree wheel showed intake open at 45 btdc and closed 18 abdc @1mm lift. That's way off. In 8.85 lift Ex 8.25 lift Edited October 6 by george 1100 Quote Link to comment
McLean Racing Posted October 7 Share Posted October 7 Have you fitted brand new spark plugs? Quote Link to comment
george 1100 Posted October 7 Author Share Posted October 7 7 minutes ago, McLean Racing said: Have you fitted brand new spark plugs? Yes, new plugs. Quote Link to comment
george 1100 Posted October 7 Author Share Posted October 7 (edited) Had some time today so degreed the cams. Inlet was one tooth off. Would've liked a bit more duration on the inlet cam. Edited October 7 by george 1100 Quote Link to comment
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