Timing problems

[Clb]

Keep looking' at some point the lightbulb will ignite!
I was yankin yer chain with the prius remark ...as no-one ever tweeks them and they just run so you'd not have an issue getting it to run.

These things are simple as a mule, feed and work!
Egt's and timming do play a respective role...
The ferret works fine IF the gun works fine( ive seen the difference in guns) when I got my 88, before I got the kent moore.

Cary on man you will get it!

 

[riotwarrior]

First off, why in the Sam Cotton hell do I want a Prius?? I blow smoke at those things! (On the other hand, my buddy's ole lady's mom had one, and I saw it spinning the front tire over) Second off, my tape is on the right way (like my dad said multiple times) and third off that is a great idea. I'm gonna pop the IP gear plate off this afternoon and check that.

Ya pop the lemon cover off below oil fill holw check orientation as said before...take pics

 

[Sparky95]

So its raining here today, and my truck doesn't fit in the shop.

Actually I could get it in there, but I'd have to take off the mirrors and I couldn't shut the door and still be able to walk around it. And there's a gutted boat in the way.

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If it slacks up I'll pull it off.

Anybody got any idea where that picture with the dowel in the right spot went? I tried to find it and couldn't.

 

[Sparky95]

Found the picture. Still raining though.

 

[Clb]

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Sorry about the lame ifail pics( its going to the doctor/shop monday)

 

[Shawn MacAnanny]

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Sorry about the lame ifail pics( its going to the doctor/shop monday)

you just posted it upside down so "retard" with the arrow wouldnt be facing your name

 

[riotwarrior]

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[rustygold]

Mine did the same when I put a new ip on it was hard start and need to advance it changed injectors problem fix.

Have you got your injectors tested?

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[Sparky95]

I haven't had them pop tested

 

[rustygold]

I would check them could cause it to

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[Sparky95]

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Well the plot has thickened. The drive gear seems to me to be in the correct spot. I checked the timing again with the light at a 90° angle to the tab. It read 8-9°. It jumped around A LOT though. I'm gonna check tomorrow and see if the pop tester at work will fit with these injectors. I also showed that video I posted to one of the old guys at work, he listened for about 10 seconds and said "your timing's off. Sounds like it's firing right at TDC." So I got to thinking, if the injectors are popping higher than they're supposed to, say 2200 psi, wouldn't the pump need to be advanced substantially due to the extra time it takes to build the extra pressure? Substantially meaning, the engine sounds amazing at what the meter says is 18° BTDC?

 

[Shawn MacAnanny]

I used my timing adapter before that bend on the injector line. I cant imagine the line swells too much right at the compression fitting. I sanded mine before putting it on too. Did you try a different timing light yet? I think regardless of where the injectors are popping you are actually reading the pop of the injector. Maybe that one is low? Can you add more tape to it and time off of the next firing injector #2? That would fire 90 degrees out right? You should technically be able to take that entire scale, wrap it all the way around the balancer and have 360 tick marks. Mark one that is around 90 with a piece of tape. Can you measure the balancer then measure very accurately between the 10 degree timing marks? We should be able to verify the distance that should be to determine if its the right tape. For instance if the balncer is 7" in diameter thats a circumference of 21.991"/ 36 is 0.6108" between 10 degree marks roughly 9/16"

Can you swap that injector with another one? If the #1 injector is popping too soon it would throw off the other 7 since you are timing based on the pop pressure of just one injector. This would explain why it runs better advanced 18 degrees. I think... right?

 

[riotwarrior]

All Looks good according to pics...tape for certain is set correct and at 0 for TDC and the IP gear does indeed appear to be correct too.

Now yes the timing pulse is based on the piezo effect of that injector firing off. So if it has lower pop than rest others would be popping off later after more pressure is built and vica versa for a high pressure inj if others are low.

Hmmm.....you can time off #4 as it fires same as #1 try that too.

 

[JLtoolman]

Sparky95, make sure your line is clean steel where the timing adapter piezo, and the ground clamp go. I use steel wool after the paint is off the line. All the rust must be gone. Put a thin layer of grease on the line under the timing adapter piezo, and where the ground is. I use cosmoline, only because I have it. You will find you get a much more steady pulse to drive the light. It won't jump around as much, if any. Also, I put the piezo above the bend, but close to it. It is easier to tighten and connect.

This won't help your timing issue, but will give you a steadier pulse.

Good Luck,
John L.

 

[Shawn MacAnanny]

Hmmm.....you can time off #4 as it fires same as #1 try that too.

Hahaha now don't make it too simple.... that's a way better idea than trying to add 90 degrees up