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-   -   Haltech PS1000 + aem coils = wet trailing plugs (https://www.rx7club.com/haltech-forum-62/ps1000-aem-coils-%3D-wet-trailing-plugs-1075432/)

Wolf_ 12-06-14 06:48 AM

PS1000 + aem coils = wet trailing plugs
 
So figured all wiring out and go the car started.. ran a while,all smooth and fine, and saw on my o2 in haltech that it was running rich... so pulled my fuel down a bit and got it to 14,1-14,3... but still when turning engine off, I get a smal pop in the exhaust, and when I directly pull the plugs the trailing are soaking wet and leading dry and nice ??

after third start the trailings was to bad so had to change them... have checked timing and it seems to be just fine on the trailing plugs... WTF!

direct fire, 4,5ms dwell. why isn't it firing enough spark, any ideas? :scratch:

vrx8 12-06-14 02:58 PM

is it firing at all? 4.5 dwell is a lot. 3.5 good enough.

AX75F92 12-06-14 04:53 PM

Are you using an aftermarket trigger wheel?

bumpstart 12-06-14 05:49 PM

trailings dont work when you crank,, naturally they need some run time for them to clean up

Wolf_ 12-06-14 07:06 PM

OEM trigger wheel, yes they fire, getting my strobe light to show my ignition marking dead on as i should be

starts good, but still after 10 minutes idel they are soaking when I pull them out

can try pulling down dwell, dwell was set after C. Ludvig's recommendation

Sammy Built 12-06-14 08:32 PM

Did you replace the plugs or put the wet one's that were in trailing in the same spot? It sounds like it needs a bit of run time. The ignition at 4.5 dwell is fine and leaning the fuel map to target AFR will just help.

Wolf_ 12-07-14 07:13 AM

had 11's at the trailing before, and the more i let it idel the worse it got.. changed to new 9's, ran like a beauty, for 15 min... back the next day, fired up nice, ran it for 10 minutes.. smal pop in exhaust when i turned it off... pull the plugs and the trailing was wet... going to run it for longer during the week, depending on the weather, living in sweden and all :p

see if longer runtime will do any difference.. will fine-tune the idel fuel cells during that time aswell

C. Ludwig 12-07-14 12:02 PM


Originally Posted by bumpstart (Post 11839411)
trailings dont work when you crank,, naturally they need some run time for them to clean up

All ignition outputs operate at all times. Believe Microtech may not trigger the trailing under cranking conditions but Haltech does.

The coils themselves work great but are sensitive to being wired correctly. Chassis ground is generally not good enough for primary ground. You also need a sufficient primary 12v supply.

Wolf_ 12-07-14 01:55 PM


Originally Posted by C. Ludwig (Post 11839639)
All ignition outputs operate at all times. Believe Microtech may not trigger the trailing under cranking conditions but Haltech does.

The coils themselves work great but are sensitive to being wired correctly. Chassis ground is generally not good enough for primary ground. You also need a sufficient primary 12v supply.


have a sakebombgarage harness that is grounded to the block and the battery and a 12v feed via a relay directly from the battery

getting good signal with strobe from both trailing

butt will look over all ground points and my 12v supply

bumpstart 12-07-14 05:44 PM


Originally Posted by C. Ludwig (Post 11839639)
All ignition outputs operate at all times. Believe Microtech may not trigger the trailing under cranking conditions but Haltech does.

The coils themselves work great but are sensitive to being wired correctly. Chassis ground is generally not good enough for primary ground. You also need a sufficient primary 12v supply.

pretty sure that as far back as the E8/E11 the haltechs still cut the trailing out on cranking

mine certainly does

,, found that out and then confirmed it in some haltech literature ( somewhere )
when it was immediately established that l2 had a dry connection in the coil plug and that had the original engine starting up on one rotor
,, and immediately coming good on two rotors when over the crank speed threshold
( fixed the bad plug and sorted it back to two rotor startups )

Wolf_ 12-09-14 04:34 PM

Even with the wet trailings it started up just fine today as well, didn't pull the plugs today since that doesn't seem to be the problem

the problem have perhaps been identified... when started cold it lays it self at about 850rpm.. vacuum seems fine and it sounds good... then it gets a little warmer and pulls the idel rpm to 1100.. and sounds more troubled and vacuum goes to about 3,5 psi only... and my turbo got a bit red glowing... so started so fix around with ignition base... but noting happened.. when pulling down fuel and up it reacted directly

so turned it off and pull it back in the garage... got home and called my tuner, but he didn't have a good explanation on top of his head...

så I got bored and started the haltech program again and after a couple of minutes I found the "zero throttle timing" under ignition... and saw that 800rpm was set to 30 degree ignition... and 900rpm -5 ... so think my ignition at idel 1100rpm has been backed off quite a bit this whole time
could explain my pops in the exhaust earlier

gonna try turning it off before nect start up..

does this sound reasonable or just something crazy? :D

Wolf_ 12-12-14 04:52 PM

PROBLEM HAS BEEN SOLVED

it was human error when installing the harness and connector, had put the L2 signal on L1, and reverse.... now its running like a god, starts very easy, can't wait to get it tuned

just wanted to thank for all your brainstorming =)

Sammy Built 12-12-14 06:12 PM

Great news glad you got it fixed!


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