Author Topic: fueling (Read 5615 times)

96jetta · « **on:** December 30, 2008, 09:07:07 am »

ive got the cam and the crank all in perfect timing but there is no bit in the fuel. ive lined up the hole and the slot in the injection pump. however it doesnt seem to be going for me. is there some thing im missing here?

theman53 · « **Reply #1 on:** December 30, 2008, 09:14:37 am »

If by bit you mean the tool to align the pump then it doesn't go in far. I usually wiggle my IP sprocket back and forth before timing to make sure that the tool is in place.
Other than that I am not sure what you could be talking about?

96jetta · « **Reply #2 on:** December 30, 2008, 09:51:06 am »

lol na sorry typo. i ment to say bite in the fuel. the starter keeps turning the motor over but the fuel doesnt bite, explode, catch sorta deal

zukgod1 · « **Reply #3 on:** December 30, 2008, 10:07:35 am »

Power to the fuel cut off solenoid?

96jetta · « **Reply #4 on:** December 30, 2008, 10:14:57 am »

the key is turned to the on/ignition position

96jetta · « **Reply #5 on:** December 30, 2008, 10:25:43 am »

i wemt out to the garage and checked the voltage on the solenoid behind the pump on the top. it has power it floats between 0.38DC volts-12.75DC volts

zukgod1 · « **Reply #6 on:** December 30, 2008, 10:27:46 am »

Shouldn't float. 12v consistent.

Crack a line at one of the injectors and turn it over to see if there is fuel at the injector.

96jetta · « **Reply #7 on:** December 30, 2008, 10:30:18 am »

i did that yesterday to see if the pump was actually pushing out fuel. i had to hold the throttle wide open to get a decent amount out though.

zukgod1 · « **Reply #8 on:** December 30, 2008, 10:39:43 am »

what do you have the timing set at?

96jetta · « **Reply #9 on:** December 30, 2008, 10:41:20 am »

what do u mean set at??

Vincent Waldon · « **Reply #10 on:** December 30, 2008, 10:47:13 am »

He means: when you used a dial indicator to accurately set the injection pump timing, what value did you use?

My suggestion: start back at the beginning... what are you doing, why are you doing it, what have you done so far? Your first post kinda leaps into the middle of the story and we're gonna play 20 questions for a while if we don't start back at the beginning. :lol:

96jetta · « **Reply #11 on:** December 30, 2008, 10:50:49 am »

i destroyed the lifters a while back ao i pulled the head to c the damage. installed a new head guasket, liters, cam, timing belt and timing bel tentioner. ive put the timing marks dead on several times. but as much as i try i cant get the pump timing right. ell thats what i think the problem is

96jetta · « **Reply #12 on:** December 30, 2008, 10:51:35 am »

and no i didnt use a dial indicator

Vincent Waldon · « **Reply #13 on:** December 30, 2008, 10:58:23 am »

OK, a couple of thoughts:

- assuming the lifters got destroyed due to valves colliding with pistons, was the head completely disassembled and all components checked ? Enough force to destroy lifters usually means as least some of the valves will have deformed shafts that won't move freely and can jam open.

- did you prime the injection pump by applying suction to the "Out" fitting until no air came out ? If not, it can take a lot of cranking for the system to prime itself

- if you are primed, are you getting any fuel at all when you crack an injector line ? Even with the timing out of whack you should get a bit of fuel at the injector line, with the key in the on position

- does your injection pump pulley have one central bolt and three smaller bolts, or just the one central bolt. If it just has the one central bolt you need a dial indicator to accurately set the timing... aligning the marks gets the belt in the right spot but the precise timing can still be way off:

http://vincewaldon.com/index.php?option=com_content&task=view&id=24&Itemid=28

96jetta · « **Reply #14 on:** December 30, 2008, 11:01:52 am »

the head was not completely disassembled i just pushed down on the valves and they cam out straight so i figured that was ok. is it? the pump has fuel coming from the cracked lines to the injectors. the pump is the 3 bolt on a center bolt pattern

Author Topic: fueling (Read 5615 times)

96jetta

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