scorpionp54

my engine started making a ticking noise louder then usual, i think its the injectors because when i do the stethoscope test with a screwdriver i can here the ticking and also i can here it threw the fuel rail. when i unplug an injector 1 at a time the noise slightly goes away. is there another easy way to test the injectors?

NismoPick

The injectors are supposed to tick.

scorpionp54

they got louder then normal. i tried to get a video but my camera wasnt working i'll try to get it soon

SHADY280

do you have hydraulic lifters? they may be on there way out and causing some extra clatter.

scorpionp54

if hydraulic lifters are what came in a 82 na stock, i havent looked up what i have

SHADY280

i believe 83 was the first hyd. lifter year, but ive know to miss by a bit sometimes. if the car still runs fine, maybe your just hearing better!

scorpionp54

im only 19, and i dont remember having but im going to go look up that thread on hybridz on the noisy lifters.

duowing

do the solid lifters get noisier when they're in need of adjustment?

scorpionp54

i look at my head and i saw a p79 above where the number 2 spark plug

NismoPick

Yes... but they are easy to adjust.

Yeah, you don't have hydraulic lifters.

scorpionp54

so would they make ticking noises from old oil or are they just out of adjustment

scorpionp54

and i adjusted them a few months ago and they were fine i'll change my oil first then if they are still ticking i'll look to check their adjustment

NismoPick

You can check the gap right now w/ feeler gauges... then you'll know if they are making the noise / needing adjustment.

scorpionp54

i would but all my tool are at my parents house and my at my apartment 100 miles away, i need to do an oil change anyways

speed280zx

Hey nismo do you know how many thousandths they are to be set to? I might be needing to adjust mine...

scorpionp54

i beleave it .010 intake and .012 exhaust for the hot. not shure what it is on cold

NismoPick

Indeed. Cold is:

.007in / .17mm intake / .009in / .24mm exhaust Page 26 of the Haynes manual.

scorpionp54

ok cool it would be easier cold then when i did it hot

NismoPick

I used to do a "mad dash" trying to adjust them hot. Then one time I loosened them all at the beginning, then adjusted them one by one. That gave me more time.

speed280zx

Sweetness.. Yeah still need to order one of those.. !

scorpionp54

is it better to do it hot or cold

NismoPick

Ideally you want to adjust them hot, because metal expands when hot (aka running temp) so the adjustments will be more accurate.

scorpionp54

ok i'll do it hot and burn my fingers

scorpionp54

just another quick question, about what is the average life spand on the fuel injectors, i have 67000 miles on my engine

NismoPick

It depends on how well they have been treated... but they should last as long as the motor.