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Old 12-01-2010, 12:33 PM   #16
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Default Re: Took car to the dyno... Need help troubleshooting

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Originally Posted by 67AfroMaro View Post
Yes, tried timing at 20, 25 and 30 and the box sets it correctly against my light.
All you need to do is check it at 30. If it matches then your crank trigger is exactly where your crank angle reference value is. What do you have for the reference?
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Old 12-01-2010, 01:12 PM   #17
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Default Re: Took car to the dyno... Need help troubleshooting

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All you need to do is check it at 30. If it matches then your crank trigger is exactly where your crank angle reference value is. What do you have for the reference?
41
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Old 12-01-2010, 01:21 PM   #18
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Default Re: Took car to the dyno... Need help troubleshooting





Sucks!
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Old 12-01-2010, 01:22 PM   #19
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Default Re: Took car to the dyno... Need help troubleshooting

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41
Yeah that's too late. Advance the crank trigger 9 and set the reference back to 50. How much timing do you have at idle? 34-36 or so?
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Old 12-01-2010, 01:24 PM   #20
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Default Re: Took car to the dyno... Need help troubleshooting

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Sucks!
Scroll back to where you are on the throttle and repost a screenshot.
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Old 12-01-2010, 01:38 PM   #21
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Default Re: Took car to the dyno... Need help troubleshooting

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Old 12-01-2010, 01:40 PM   #22
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Default Re: Took car to the dyno... Need help troubleshooting

doh... this is the not full TPS one... I'll have to download the 100% one
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Old 12-01-2010, 01:46 PM   #23
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Default Re: Took car to the dyno... Need help troubleshooting

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That TPS value should be fine. Go into your AFR negative correction and make sure all the values are -. From the looks of it you may have positive values in there.
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Old 12-01-2010, 03:20 PM   #24
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Default Re: Took car to the dyno... Need help troubleshooting

18.3V ? Use a 'noid' and a stethoscope to see if the injectors are firing and sound the same as the others.
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Old 12-01-2010, 03:24 PM   #25
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Default Re: Took car to the dyno... Need help troubleshooting

It's a 16v system with an alt.
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Old 12-01-2010, 03:34 PM   #26
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Default Re: Took car to the dyno... Need help troubleshooting

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18.3V ? Use a 'noid' and a stethoscope to see if the injectors are firing and sound the same as the others.
Or do it old school and use a long blade screw drive. The metal end on the injector and the plastic end to your ear. At 16 volts you will hear them click.
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Old 12-01-2010, 04:25 PM   #27
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Default Re: Took car to the dyno... Need help troubleshooting

At almost ANY voltage you will here them click! Taught my daughter how to "listen" to things on the engine with a long screwdriver. The "poor mans" stethescope!

Were the injectors flowed before using them? Were they flowed at the rail pressure you are running? Some injectors do not like high rail pressure. I have almost never seen a clogged injector. A little bit of crap in the inlet screen, but never enough to stop flow 100%. And...........it is far better to have NO flow than to have SOME flow!
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Old 12-01-2010, 04:32 PM   #28
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Default Re: Took car to the dyno... Need help troubleshooting



http://www.injectorcleaning.co.uk/spray.htm

Last edited by yeti; 12-01-2010 at 04:34 PM.
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Old 12-01-2010, 04:37 PM   #29
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Default Re: Took car to the dyno... Need help troubleshooting

sounds like rotor phase to me.

did you say you have a crank trigger and the 7 reluctor teeth removed configuration?

I think I have a video of testing injectors and harness with a 9 volt battery, I'll try to find it.

before I had my own injector cleaning/flowing machine I rigged up some hose and a can of carb cleaner and hooked up a 9 volt battery to a push button. It would find any injector that way way clogged. I may have a pic of that as well.
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Old 12-01-2010, 04:51 PM   #30
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Default Re: Took car to the dyno... Need help troubleshooting

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Originally Posted by Greg Kelley View Post
sounds like rotor phase to me.

did you say you have a crank trigger and the 7 reluctor teeth removed configuration?

I think I have a video of testing injectors and harness with a 9 volt battery, I'll try to find it.

before I had my own injector cleaning/flowing machine I rigged up some hose and a can of carb cleaner and hooked up a 9 volt battery to a push button. It would find any injector that way way clogged. I may have a pic of that as well.
Would rotor phase consistently miss the same two cylinders?

Do you spray through the injector opening or outlet?

I have this dist http://www.summitracing.com/parts/MSD-2340/

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1.17 60' on 275's and Leafs
5.02 @ 147 on 26x8.5's (Vid)
4.79 @ 151 on 275's (Vid)


Vortech Superchargers
Chris Alston's Chassisworks
Moran Motorsports
dad's Custom Tanks
T-Flow Racing Heads
Unlimited Fiberglass
Holley Performance
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