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post #1 of 36 (permalink) Old 06-12-2012, 10:14 PM Thread Starter
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Problem

Im new to the whole fi quad thing. I just bought an 07 lr450 that supposedly just needed the valves adjusted. Barely started. Got it home and won't start. Took tank and everything off. Pulled valve cover off and checked the clearances and they are good and the cams are set correctly. Pulled plug out and cranked and it's got a blue spark while cranking so I put it back in. Fuel pump is getting about 12volts to it for around 3 second when u first turn key on but then nothing while cranking. But when I hook the wires up to the pump it doesnt turn on at all. There was a little insulation missing on the ground wire of the pump at the connection so I grounded that to frame and turned key on and pump came on. I checked the throttle position sensor and the numbers were good 1.6 shut and like 5.2 open. When I had throttle body off I turned key and the fuel injector shot a good looking mist for a split second so I assume that is working fine. Put throttle body on and sprayed starter fluid into inlet while cranking and nothing. There is a decent amount of oil in the air box I don't know what that's due to. I cranked it with the valve cover off and sprayed starting fluid in inlet and noticed when I did this it appeared to fog out through kinda by where the timing chain runs. Stop spraying and it stops fogging a few seconds later and when you start spraying it starts fogging out again. Then I hooked tank back up and primed the pump and lines by jumping pump with another battery. And cranked with quarter throttle and I got it to run. It was choppy and wouldn't idle but it was better than nothing. So I put the valve cover on and hooked everything back up and it won't start. At a quarter throttle while cranking it will speed up like its trying to catch but wont. I just got another stock Cdi and plugged it in and it still won't start. It seems to have decent compression. I have no idea what to do from here. Any help would be great.
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post #2 of 36 (permalink) Old 06-12-2012, 11:09 PM
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First off, stop using ether on it.

Oil in the air box sounds like bad rings. Do a leak down or compression test on it.

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post #3 of 36 (permalink) Old 06-13-2012, 07:21 AM
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If it starts on ether you have a fuel issue.

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post #4 of 36 (permalink) Old 06-13-2012, 07:43 AM
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1.6v at closed throttle is too much. closed throttle reading should be .58 -.62v Oil in airbox is not good. and you need to find out why your fuel pump doesn't come on during crank. and check your fuel psi.

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post #5 of 36 (permalink) Old 06-13-2012, 08:43 AM Thread Starter
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How exactly should I check the tps. I checked ohms on the switch not volts?
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post #6 of 36 (permalink) Old 06-13-2012, 09:01 AM Thread Starter
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And how would I go about finding why the pump won't run while cranking. That's why I changed the brain but it didn't help.
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post #7 of 36 (permalink) Old 06-13-2012, 08:18 PM Thread Starter
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Retimed cams by eye which gave me 14 pins and it started to run. Started adjusting tps and it started to run better but I couldn't turn it back far enough to get it to run completely right. Installed new throttle body with new injector and tps and now it won't start again. Installed my original injector and still nothing. This is horrible.
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post #8 of 36 (permalink) Old 06-13-2012, 08:43 PM
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Quote:
Originally Posted by 03twotonehd View Post
Retimed cams by eye which gave me 14 pins and it started to run. Started adjusting tps and it started to run better but I couldn't turn it back far enough to get it to run completely right. Installed new throttle body with new injector and tps and now it won't start again. Installed my original injector and still nothing. This is horrible.
14 pins from timing mark of exhaust cam to timing on intake cam?

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post #9 of 36 (permalink) Old 06-14-2012, 03:09 AM
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post #10 of 36 (permalink) Old 06-14-2012, 06:09 AM
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Yup Maybe your cams are spun on the gears?

I have a link to the manual in my sig. Maybe you should start by pulling diagnostic codes. the proper adjustment procedure for the TPS is in the manual too.

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