Newb Questions

[91f2504x4]

Seems like I would have to do this on a particular cylinder, since they hit TDC at different crank positions, right? I'm guess #1?

Yes, you want to do this on the #1 cylinder.

 

[vt951]

Thanks!

 

[vt951]

So, tonight I tried to crank it with the batteries freshly charged. Still nothing. Then used ether, and nothing. Pulled out the glow plugs, and #3, 5, 7, and 8 were a little wet. The others were dry and showed signs of combustion. #4 had a lot of caked on carbon, and also measured different resistance than the others, 2.1 ohms while the others were are 1.3 ohms.

I bought a cheapo diesel compression test kit at Harbor Freight, but the glow plug adapter with the correct thread would not go in. I'm going to return it and order a kit online.

Also, I wanted to add that the glow plugs are Autolite's. I read somewhere on here that they are not recommended because the tips tend to break off and get stuck in the cylinder (when you remove them). Can anyone here substantiate that, before I got and buy all new glow plugs?

 

[91f2504x4]

Did you witness any smoke out of the exhaust at any time during all the cranking?

 

[motox tech]

when I instlalled my rebuilt 6.9 a few years back, I had a heck of a time getting fuel or smoke. I took line off a backside of fuel filter, then blew compressed air into fuel tank inlet till fuel showed up at filter. Reconnect line at filter, crack all injector caps, crank till wet w/fuel. Tighten caps then try. For some reason the 6.9 has problems priming, at least mine did. May not help but hope it does

 

[vt951]

Did you witness any smoke out of the exhaust at any time during all the cranking?

I was not watching for smoke tonight. Next time I'll try to remember that.

 

[vt951]

when I instlalled my rebuilt 6.9 a few years back, I had a heck of a time getting fuel or smoke. I took line off a backside of fuel filter, then blew compressed air into fuel tank inlet till fuel showed up at filter. Reconnect line at filter, crack all injector caps, crank till wet w/fuel. Tighten caps then try. For some reason the 6.9 has problems priming, at least mine did. May not help but hope it does

That's one thing I haven't tried... to crack all 8 injector caps. I cracked 1 and 2, and that's it.

 

[91f2504x4]

I usually have to get 4 or so bled before they will try to start. I worked on a tractor (4 cyl case) the other day that would not start until I had all 4 bled completely . It was still a pain in the **** to get started, I had to have it completely bled out with no air at all before it would even attemp to start.

 

[vt951]

Geez, maybe that's all it is. That would be great. Embarrassing, but great.

 

[91f2504x4]

Geez, maybe that's all it is. That would be great. Embarrassing, but great.

Just get up under the hood there and crack open a couple injection lines at a time and have someone hold the throttle to the floor and crank the engine over while holding the pedal down. Once fuel is coming out good, tighten those 2 and do two more.

You can also hold the throttle open yourself under the hood and cross the solenoid with wrench of something, just make sure the key is on so that fuel is flowing. Just be safe and be ready to pull the wire off of the fuel shutoff solenoid if anything goes wrong.

 

[vt951]

Just get up under the hood there and crack open a couple injection lines at a time and have someone hold the throttle to the floor and crank the engine over while holding the pedal down. Once fuel is coming out good, tighten those 2 and do two more.

You can also hold the throttle open yourself under the hood and cross the solenoid with wrench of something, just make sure the key is on so that fuel is flowing. Just be safe and be ready to pull the wire off of the fuel shutoff solenoid if anything goes wrong.

Thanks. Now I want to get out and try it , but I don't think my neighbors would appreciate me cranking a 6.9L diesel at 11 pm. Maybe I can hit it in the morning before I head out of town.

 

[motox tech]

Also I had a problem w/ the fuel seperator located near steering stem on fire wall. After trying everything you have discussed several times till I was about to choke someone, It came to me in my sleep to by pass the water seperator.(real easy to do) The stupid thing was plugged and would not allow any fuel to get to pump. The more I cranked, the more air I kept feeding the system. This may be way off from your problem but may save you problems down the road.(Mostly if you live where its cold)

 

[zpd307]

it seems as though the 6.9 water seperator causes a ton of problems. find a 7.3 and shoe horn it in there.

 

[troutwest66]

Also, I wanted to add that the glow plugs are Autolite's. I read somewhere on here that they are not recommended because the tips tend to break off and get stuck in the cylinder (when you remove them). Can anyone here substantiate that, before I got and buy all new glow plugs?

You are correct. Autolites are synonymous with s#*t. They will swell and break off sometimes on the first burn. Go to Autozone or an International parts counter and get Beru glowplugs. If it doesn't say Beru on the plug, don't buy them. A good plug should be about 1 ohm resistance. Just replace them and have some piece of mind.

 

[vt951]

Cool, I will get some Beru plugs.