65fury

I have no clue what is going on! i have done the timing on my truck three times now and everytime ive checked it, its different, the first time it advanced itseltf and now i think it retarded itself Is there a different nut or washer to use to keep it from slipping??


jason

Tate

How are you finding TDC? The pin in the cam, or do you have a mark on the damper? If the former, I'd make sure the base is tight and not moving around, or go and mark the damper using the drop valve method.

How much is your timing moving? I've never heard of timing slipping advanced before. Pump would have to keep spinning when engine stops, or it would have to slip a good 300 degrees in the gear, seems unlikey to me.

Whenever I'd done timing on my truck, pop the gear, use contact cleaner on the shaft to get it clean. I like the stuff that evaporates real fast. Seat the gear, use a socket and a dead blow hammer to seat it onto the shaft, then torque it to 140, then 180. Then double check that its where you want it. There is another nut somewhere, I know they made them in Saskatchewan, supposedly helped elimate slippage. I'll see if I can dig it up.

Clayten

Here is a thread on that nut. But i have not been able to find the company that is referred to.click here

65fury

well i find TDC with the pin in the gear method. im not sure what my timing is now cause the truck seems to be acting different from the day i timed it. if its cold when i first start it it lopes reeaallll bad, but once it idles up to normal it sounds fine, then i put it in gear and it starts loping again, and white smoke comes out my stacks until the motor is really warm, also i seem to be boosting more than usual??


jaosn

marine4life

Did you change the lock washer, a very cheap item to not change out every timing change.

65fury

nope, same lock washer i guess i should change that out huh

Tate

Whats your idle at? My truck did that after I did the conversion, idle was low. But even now on a cold day when it idles at 750, its dead smooth.

I'd do the drop valve method to find TDC, then you can set the pin to that for next time.

65fury

my truck idles at 700-800 depending if its cold or warm, but if its cold and i put it in gear it will lope at 450-550 rpms unless i give it some throttle. also it smoke white smoke at idle when cold.


jason

Tate

Is that in park/neutral, or is that in gear with the AC on? How cold is cold? When I do a dead cold start (not plugged in, no heater) in -15C, it would still idle at 750 right off the bat, and as it warmed up it would go to 850-900 rpm like it should. If its below that in park/neutral on a cold start, you might consider tightening your gov springs a click, that should raise the idle up.

Redo your timing, thats probably where you smoke is coming from. Again, cold start, I don't get much if any smoke at idle, unless I bring up the rpms to where it will start to stutter.

marine4life

Definitely, my buddy and I were absolutely stumped when we were retiming his 94 12v. We went through, step by step, made sure everything was perfect at 16 degrees advanced, took it for a drive, pressed on the go peddle and bam, truck shut sputtered and died. We went through this retiming process FIVE times. By the time I got to the sixth timing process, I was tanked(i drink a lot when very frustrated). Then, all of a sudden it hit me and I asked him, "Do you think we should change the lock washer?" We both couldn't believe how retarded we were for not changing out a dollar piece you can get at Napa. Retimed it, hit the skinny peddle and off we went.

65fury

my cold start is basically when its 55 degrees out, or even when the truck hasn't run in a couple hours and the motor is cold, it will haze white smoke until its warmed up a bit. it idles 750 in park when cold, but it drops down low when in gear. im doing the timing again right now(with a new lock washer) so i'll repost probably tomarrow and let you know how it runs. thanks


jason

65fury

okay got it retimed again this time with a new lock washer, and when i started it this morning it started lopeing and hazing white smoke again!! i timed it at 18.5 degrees, whats the deal, i have gotten a chance to drive it yet but just the initiall start up wasn't good, took a couple cranks to get it goin and then it shuddered and loped, if i gave it some throttle it revved up perfectly. any thoughts, do i need more timing? less? thanks


jason

Tate

What pump are you running, and whats the lift on it? Did you use the pin in the cam gear, or did you find TDC with the drop valve method? Is your head O-ringed and studded?

I'd say take it for a run and see how it works.

marine4life

You need to check you're timing now to see if it has slipped on you. It's pretty easy to do. You need to find TDC first, either by the drop valve method, or pin. Once you find TDC, remove the #1 delivery valve, insert you're guage. You need to preload the guage to around 7-8mm. Then you need to turn the engine counter clockwise until the guage stops dropping. Once this happens, loosen the guage so it reads zero. Then find TDC again, once at TDC read the lift on the guage, compare to the timing chart, and you should be able to see where you're at.

Bryan

65fury

im running the 160 pump, i find TDC with the cam gear pin hole, my head is studded but not o-ringed, i drove around today and noticed anytime i let the truck sit for an hour or more it would be all lopy and studder when it first start it or put it in gear, until about a minute of driving then its fine. it always has that haze of whitish smoke too, until its warmed up a little though, im gonna check my timing AGAIN tomarrow im sick of timing this thing already any more thoughts would be appreciated, thanks


jason