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Author Topic: TTS as a diagnostic tool  (Read 4032 times)

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98fxstc

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TTS as a diagnostic tool
« on: June 27, 2013, 06:47:57 AM »

I'm still very new to TTS.
Did some v-tuning with minor modifications to the bike.

Now I've done some major modifications and have a calibration ready to go but the bike won't start.
Checked the diagnostic trouble codes and nothing comes up.
Spark seems ok
How much info could I get about what the injectors are doing by doing a data log with the engine turning over ?
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hrdtail78

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Re: TTS as a diagnostic tool
« Reply #1 on: June 27, 2013, 10:00:18 AM »

If you start recording before you start the bike. You can see if they are spraying at all. 

Can you give more info on the bike?  Year, model, mods.....?
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98fxstc

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Re: TTS as a diagnostic tool
« Reply #2 on: June 27, 2013, 06:53:59 PM »

09 cvo fatbob
SE 10.5:1 pistons,ported heads with 2012? ACR's,Reaper 594s,HPI 55 tb with 5.3 injectors,standard HD R12 plugs,2into Fatcats with BB

New lifters and I wanted to prime them and the rest of the oil system so I took fuel pump fuse and plugs out and turned the engine over a few times before attempting to start - seemed good
engine check light fuctions as normal
Checked for DTCs - none
Have spark , not sure whats going on with fuel
Thought I may have injectors arse about , and fuel delivery at the wrong time. checked OK.
Thought I may have ACR's arse about and no compression at the wrong time , both work at same time anyway.
Going to get starter fluid and shoot a bit into the throttle body.
Might also disconnect ACR's and see what it does.

Starting cal for heat cycles is EQC 176 03.mt8 with all closed loop cells to 13.8 AFR and warm up enrichment zero'd.
standard ECM constants and cam estimator at 4/3

Turns over good but doesn't look like firing , flattened two batteries.
Front plug looks OK ,rear plug is starting to foul.
 
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Buckeye_Tuning

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Re: TTS as a diagnostic tool
« Reply #3 on: June 27, 2013, 07:26:55 PM »

Disconnect the ACRs and see if it will fire.  Just like the first go around with the S&S cams with the mechanical releases built in, if there is not enough compression... the bike won't fire.

So... let's see what disconnecting the ACRs will do, and we can then either take those off of the 'list', or they actually are impacting starting.
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98fxstc

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Re: TTS as a diagnostic tool
« Reply #4 on: June 28, 2013, 12:00:26 AM »

I disconnected the ACR's and made no difference.
I got some starter fluid and gave it a couple of shots while it was turning over.
It reacted but wouldn't start.
Hooked up the TTS and did a data recording while trying to start.
Tried to attach it here but not allowable file type.
I'll figure something else out.
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Hilly13

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Re: TTS as a diagnostic tool
« Reply #5 on: June 28, 2013, 12:36:21 AM »

Don't want to be a duck but when you turn on the ignition can you hear the fuel pump prime up?
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98fxstc

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Re: TTS as a diagnostic tool
« Reply #6 on: June 28, 2013, 12:50:56 AM »

Don't want to be a duck but when you turn on the ignition can you hear the fuel pump prime up?

Fuel pump primes up and I have fuel getting thru to the plugs but not sure how much.

Went down to Repco and got 'Start Ya Bastard' but didn't help.

Did get a datamaster file but had to zip it to post.

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Hilly13

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Re: TTS as a diagnostic tool
« Reply #7 on: June 28, 2013, 01:00:39 AM »

Leave your plugs in and pull the leads, plug some plugs into the leads, ground them and see if it sparks, or have you done that already?
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98fxstc

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Re: TTS as a diagnostic tool
« Reply #8 on: June 28, 2013, 01:03:41 AM »

Leave your plugs in and pull the leads, plug some plugs into the leads, ground them and see if it sparks, or have you done that already?

Already done that.
Got spark.
Swapped plugs too , no different.
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Hilly13

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Re: TTS as a diagnostic tool
« Reply #9 on: June 28, 2013, 02:06:55 AM »

So it has fuel and spark and don't go, valve adjustment, opening and closing?
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98fxstc

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Re: TTS as a diagnostic tool
« Reply #10 on: June 28, 2013, 09:01:33 AM »

So it has fuel and spark and don't go, valve adjustment, opening and closing?

Starting to think about valve adjustment.
Disconnected the ACR's and didn't make any difference - should have made a big difference.
I'll check compression and pushrod adjustment.
Put new lifters in and didn't take them long to bleed down , I assumed there was little oil in them.
Maybe it was the adjustment?
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remington007

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Re: TTS as a diagnostic tool
« Reply #11 on: June 28, 2013, 10:29:08 AM »

Did you reverse the spark plug wires at the coil when you had the bike apart??? Easy to do!
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Hilly13

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Re: TTS as a diagnostic tool
« Reply #12 on: June 28, 2013, 04:01:42 PM »

That's a good point rem07, that would do it for sure, acr's disconnected should be noticible with that build though, summit up with that.
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hrdtail78

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Re: TTS as a diagnostic tool
« Reply #13 on: June 28, 2013, 07:20:40 PM »

Don't see anything glaring in the data record.  Are you plugs wet?  They should be after cranking and no light off.  I would also unplug the fuel quick disconnect, prime fuel, and stick a small screw driver up there to unseat the check ball.  They stick sometimes.
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hrdtail78

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Re: TTS as a diagnostic tool
« Reply #14 on: June 28, 2013, 07:21:49 PM »

https://www.box.com/home/

This is the easiest way to post file on forum.  That I have found.
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