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BIKELAND > FORUMS > ZX12R ZONE.com > Thread: intake cam project no start? NEW TOPIC NEW POLL POST REPLY
supra5677


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posted March 26, 2007 11:25 AM        
intake cam project no start?

Finally got the cam timed back in the bike and button everything up.. Starting and motor is spinning but not start.. I made sure 1 and 4 were up to top dead center.. 31 links on the intake side 32 links on the exhaust.. NO START anybody have any ideas.. Im gonna check spark and fuel..Motor does not appear to be 180 degrees out..

supra

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entropy


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posted March 26, 2007 11:40 AM        
supra,
that's exactly what mine did when i had the intake 180 out; exactly...

do a quick compression test, if cold cranking compression = zero... well you know
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supra5677


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posted March 26, 2007 12:10 PM        
thank I'll try that
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psycho1122


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posted March 26, 2007 08:41 PM        
I would also reset the ECU by dis-connecting, then re-connecting the main white connector behind the battery cover.
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ninja12


Needs a job
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posted March 27, 2007 07:53 AM        
You put a intake on the exhaust?
What did you do about the pickup?

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supra5677


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posted March 27, 2007 11:27 AM        
only bought new race intake cam... exhaust cam is stock..
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ninja12


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posted March 28, 2007 05:47 AM        
How do you get these cams 180 out?
If the 1/4 is TDC the cams determine exhaust and compression stroke.
Did you put 2/3 TDC and install cams as if 1/4 were TDC?
What am i missing?

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entropy


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posted March 28, 2007 07:58 AM        
quote:
How do you get these cams 180 out?
If the 1/4 is TDC the cams determine exhaust and compression stroke.
Did you put 2/3 TDC and install cams as if 1/4 were TDC?
What am i missing?


i did it by putting the int cam in upside down; i.e. looking at the adj gear, i put the mark on left side when it should have been on the right.

motor turned over perfectly, just no compression.
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johnnycheese


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posted March 28, 2007 11:12 AM        
also do not forget about inake cam vs. ecu to make sure they match
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supra5677


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posted March 28, 2007 12:12 PM        
update: no fuel injection sound when I go to start engine.. motor turns perfectly but no start..
will check spark first, then fuel, then compression.. If I have compression then the issue is in the wiring/ecu.... shoot...

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entropy


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posted March 28, 2007 01:23 PM        
supra,
your test plan is exactly what i did, because I THOUGHT i didn't hear any ticking in the injectors.

I was wrong, i just wasn't hearing it at cranking speeds.

After i spent hours and hours checking and rechecking spark and fuel, i finally did what i should have in the first place; checked the compression. (it was zero).

I'm not saying that you put yr cam in upside down like dumbass me did, but it is only a 3 min test...


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psycho1122


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posted March 29, 2007 07:06 AM        Edited By: psycho1122 on 29 Mar 2007 08:08
quote:
I would also reset the ECU by dis-connecting, then re-connecting the main white connector behind the battery cover.


If you had injectors or coils unplugged during your process and powered the system, the ECU will shut down what it does not see untill it's reset.

This takes 10 seconds and can save a headache.

I have installed 180 myself w/ APE Sprockets on...no fun!
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supra5677


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posted March 29, 2007 09:19 AM        
I disconnected then re connected the main white cover behind the battery cover.. There are 2 30 amp fuses in there.. thanks for everybodies help.. will update when up and running
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ninja12


Needs a job
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posted March 29, 2007 10:57 AM        
karl, I see now.
I've heard that before but nobody could explain how.
Thanks.
supra, I would hit it with a shot of starter fluid to see if it's getting fire or fuel.
If it hits on the fluid you don't have fuel, if nothing happens you don't
have fire. If it pops and backfires something is timed wrong.
a good leak-down can be very ususeful at times like this.

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stef12rr


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Posts: 144
posted March 30, 2007 02:52 PM        
supra5677 did it work? to put the intake cam on ex side because i am doing the same think, i put the crank sensor on the intake side and it work find, but the 2 only think i found is the lobe on the intake are 2mm larger then the ex cam and the oil way are slighty on the left
the intake have .020 better lift than the ex side

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supra5677


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posted March 31, 2007 05:13 PM        
I only have a new intake cam.. Exhaust cam is stock..in Las Vegas right now.. be back in few days
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stef12rr


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posted April 01, 2007 08:07 AM        
ok supra talk to you later
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supra5677


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posted April 02, 2007 04:52 PM        
did a fuel test.. gas seems to be saturating the spark plugs.. did the spark test grounded the spark plug against the side of the frame no spark.. trying to avoid going to shop.. any ideas?

supra

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tcchin


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posted April 02, 2007 05:56 PM        
I don't mean to sound belittling, but have you checked the connections on your crank- and cam-position sensors, as well as your sidestand safety switch?
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supra5677


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posted April 03, 2007 08:46 AM        
I was thinking abou that... let me pull the valve cover back off...
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tuusinii


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posted April 04, 2007 01:33 AM        
Does the FI light come on? If so check the code. If Cam sensor is disconnected it will flash the FI light - I've heard
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ninja12


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posted April 04, 2007 06:20 AM        
three things ,
1. check the break light fuse it controls the PC3.
2. check the gap on the crank pickup near clutch basket.
not suppose to be adjustable but a little bend can go a long way.
3. check all connections especially under the left cover.
All have given me gray hairs in the past.

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entropy


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posted April 04, 2007 06:56 AM        
quote:
three things ,
1. check the break light fuse it controls the PC3.
2. check the gap on the crank pickup near clutch basket.
not suppose to be adjustable but a little bend can go a long way.
3. check all connections especially under the left cover.
All have given me gray hairs in the past.



you got that right!
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tcchin


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posted April 04, 2007 12:07 PM        Edited By: tcchin on 4 Apr 2007 13:08
I the TPS display is working on the PC3, then there should be power to it. Besides, I'm not sure the injectors would be working with a dead PC3, and there was fuel on the plugs.
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dougmeyer


Needs a job
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posted April 04, 2007 12:19 PM        
So what's the compression?
Is the PC out of the system?

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