Power loss

[dbeardslee]

Pretty tough to check at high engine load. I ohmed them out and they checked OK. Never noticed any arcing.

As I stated, these caps aren't that old but they could be it since they are one thing I haven't changed.

That's one of the things I like about non-resistor caps. There's nothing in 'em to go bad, and they're a lot cheaper than resistor caps. You can get a set of NGK non-resistor caps at O'Reilly for $5.56 + tax.

I've heard others say that if you've got resistor plugs with resistor caps it can cause a weak spark. Using that logic, I'm wondering if old 15Kv coils might spark better with non-resistor caps and stock non-resistor plugs. JAT

[ViperRon]

Greg you can take the NKG plug caps apart usually. There is a screw in the inside that tightens against the spring and parts inside. They corrode easily just from heating and cooling. White powder corrosion builds up and it will cause high resistance when warm under load but measure fine with meter. You can take parts out and soak all in TARNEX then clean and put a little ignition grease on them and will remove the problem usually but new ones are a better solution.

[BA80]

These new ones don't come apart Ron, I already tried. They are all integral, molded together.

[motoman]

Why not just buy the Dynas? You'll save the expense of temporary coils, and even if the coils don't turn out to be the problem, they're still a HUGE improvement over the stockers.

Your statement related to cost difference is WAY off my friend. Used VFR 3ohm coils are $20-40buck a set.

[dbeardslee]

Your statement related to cost difference is WAY off my friend. Used VFR 3ohm coils are $20-40buck a set.

Do you ever read a whole thread? He said he was going to try a set of VFR coils, and if they fixed the problem he said he was thinking of buying a set of DC1-1's. So whether it's $20 or $40 if they're only used as a diagnositic tool, and he's going to get a new set anyway, that's $20 to $40 more than he needs to spend.

[BA80]

I got a set of CB700 coils for free Doug. Still the same. In fact, the video is with them installed.

[dbeardslee]

I got a set of CB700 coils for free Doug. Still the same. In fact, the video is with them installed.

I know - I've been following the thread. When somebody quotes me from atop their high-horse I generally respond, and I'm sure you recall the way the conversation was going several days ago.

[motoman]

I know - I've been following the thread. When somebody quotes me from atop their high-horse I generally respond, and I'm sure you recall the way the conversation was going several days ago.

hate that when that happens.

[Brent]

It seems like whenever the engine is under the greatest loads. Even under part throttle going slowly in lower gears it bogs but the lower gears it can push through and take off, it the upper gears it can't get to a high enough RPM to push through it because it's working too hard.

I can get to 90 pretty easy if I don't use full throttle but as soon as I do it just flattens out.

Hi Greg,
I have had & seen some bikes run sort of like you describe. Turned out to be insufficient fuel supply. Fuel lines kinked or fuel lining collapsed where it hides inside, Partially clogged filter or screens inside tank, Bad pressure regulator with low pressure to fuel injectors. YMMV l . I believe my screens may be dirty since mine runs better if tank is over 1/2 full. fuel level in your tank make any difference?

Not at all sure, but at least fuel lines are not too high$$$$

Good luck wrenching.
Brent

[BA80]

These new ones don't come apart Ron, I already tried. They are all integral, molded together.

Upon closer inspection the short 90 degree caps don't come apart but the longer 120 degree caps do.

[BA80]

Put some different resistor caps on, no difference.

Next step change the ONLY part I haven't yet. The pick up coils.

[dbeardslee]

Put some different resistor caps on, no difference.

Next step change the ONLY part I haven't yet. The pick up coils.

You're getting spark, but the indications seem to be that it's a somewhat weak spark. The pickup coils just tell the TCI when it's time to send electricity to the ignition coils, which they seem to be doing. If you had a problem with the pickups you'd expect it to show up by plugs 1 & 4 looking different than 2 & 3. But I don't think changing the pickups is going to get you a hotter spark. I also don't think the pickups performance would improve at higher rpms, and judging from the video it sounds like it runs better at high rpms. But if you've got another set it couldn't hurt to change 'em. Who knows, maybe you'll get lucky. And it's better to be lucky than good any day.

Have you checked the gap on your plugs? Should be .028-.032, and with old coils closer to .028 would probably be in order.

[BA80]

I tested them on the bike and they tested good. I was thinking like you, it's just a signal to the TCI. BUT, what if that signal is scrambled at a cetain frequency?

When I pulled the old ones off I tested them on the bench. One coil seems to have ohms fluctuating when I move the wires around.

Cross your fingers.

[dbeardslee]

When I pulled the old ones off I tested them on the bench. One coil seems to have ohms fluctuating when I move the wires around.

How much was it fluctuating?

[BA80]

A lot.

Just test rode the new pick ups.........@&%$*$#*&%$%

No difference.