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Ignition/Tuner/ECM/Fuel InjectionNeed advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.
07 EGUC.......starts fine cold.......sometimes starts hot with no problems........sometimes hot wont start hot.
Powervision installed........tried starting with attached and without.....no dif.
Pulled plugs (only about 3k miles on them, NGK Irridium) gap was like .10???
I know I gapped them correctly when installed.......regapped to .40.
Ran it for about 50 miles........stopped for a quick phone check........started no problem.......drove about another 20 miles.....stopped for food.......wont start!!
NO codes thrown.
turns over fine (new 600CCA battery) seems like no spark when spinning......
Gotta know the history of the issue before help can be offered.
Was the engine running great and starting without issue, then something occurred that started this condition.
Or did this issue develop over time?
Powervision isn't a product that disconnecting the little monitor does anything for running...its just a monitor.
Maybe you have a PowerCommander, which does attach to the bike?
An intake leak can cause hard starting. With the engine started, warmed, and idling spray WD40 with the little tube attached, right at the intake manifold flanges that boort to the heads. If idle speed changes (up or down) you have a leak.
Fouled spark plugs from overly rich startup fueling can cause starting issues.
Mo info please...
Bob
The only way the gap can close is if something mechanically closed it.
Both plugs? If both somethings definetly wrong. If it's just 1 it's possible something went through the intake into the combustion chamber.
He very first thing you need to determine,is what closed the gap(s).
Compression test will quickly point out a bent valve (whatever closed the gap went out the exhaust).
Loss of serial data is nothing to worry about.
You may have a bad engine temp sensor causing the engine to run rich virtually everywhere but first the spark plug gap is the major issue.
What spark plugs are in the engine?
Have you looked at them? If so what color?
Mo info,
Bob
The plug gap concerns me too Bob.........after a 150 miles took them out and look good and gapped as I left them at .40.(NOT closed like they were, gonna keep an eye on that!)
The plugs are NGK Iridium DCPR7EIX, which are a replacement for the stock plugs.
Gonna pick up a spark checker and hook it up next time it won't start.
Could be awhile as the Wx isn't so good right now in NE.
Save some real $$ and just buy stock HD plugs and wires as they provide the best performance including the ION knock sensing accuracy.
No high performance plugs or wires produce ANYTHING BUT CONFUSION to the ION system and how it is modeled.
Bob
well.......might have found something in the PV1 software that may be a problem.....
A map was sent to me by a reputable person.........went through all the parameters.....found a few deficiencies.......
IAC Crank Steps.....value was 0 in the old map that he sent me........
value is 110 in a map from Powervision and in my original map.....
IAC CRANK TO RUN..........0 in all temp ranges in old map he sent me.......
in powervision and original maps value ranges from 45 to 20 depending on temp........
So far in a 100 mile run in the cold.......had no problem with starting when hot with newer map.......will be checking as riding weather permits.........but I tend to think that the omission of these two value parameters were messing with my hot starting problems.....
I would almost guarantee you the map was the problem if not for the plug gap closing. Like said above, put the HD plugs back in for your knock protection.
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07 Ultra wont start hot
