New injectors

[ghunt]

I'm thinking about doing new injectors in my truck. Well, maybe- my fuel economy has seemed like it has dropped off a bit since I bought the truck, it has 103K on it right now and I've only put probably 6-7K on it since I bought it.

Now, I DID find out just in the last few days that I have a weak lift pump, I'm only seeing 1.5 psi at the filter head at idle, 2.5 psi on fast idle, so I ordered a Carter P4070 and I'm gonna see if that helps any.

If not I may also try putting on some new injectors. What's the best place to get them from? I'd certainly like some moose injectors but I think they're out of my price range at the moment. Also is new or rebuilt better? I also thought maybe it would be a good idea to send the injectors out and have them flowed and equalized.

One last thing- I've heard a lot of mention about timing. However I can't seem to find a diesel timing meter on ebay or elsewhere that actually still has a luminosity probe. I also have previously looked for the timing mark on my IP and I couldn't see it. Is there some "backyard" way I could play with the timing and see if MPG & power improve?

 

[sootman73]

what kind of gauge did you use to check your fuel pressure? would a regular dial pressure gauge work on the schrader valve? or will it not work because it liquid?

 

[ghunt]

It's a Mr. Gasket 1 1/2" mechanical gauge, 0-15 psi. It's not liquid filled, I'm pretty sure liquid filled gauges are just supposed to give you a more consistent reading in high-vibration areas (keeps the needle from jumping around), but at idle even on a diesel I don't think vibration is a big issue with that gauge.

Oh and I put mine on a tee right where the line from the pump goes into the filter head.

edit: Hey sootman you have 4" stacks on your truck, do you have any pics?

 

[sootman73]

yea heres the best ones i have with me at school.

 

[RLDSL]

I'm thinking about doing new injectors in my truck.
If not I may also try putting on some new injectors. What's the best place to get them from? I'd certainly like some moose injectors but I think they're out of my price range at the moment. Also is new or rebuilt better? I also thought maybe it would be a good idea to send the injectors out and have them flowed and equalized.

One last thing- I've heard a lot of mention about timing. However I can't seem to find a diesel timing meter on ebay or elsewhere that actually still has a luminosity probe. I also have previously looked for the timing mark on my IP and I couldn't see it. Is there some "backyard" way I could play with the timing and see if MPG & power improve?

See Type 4 on this site he sells new ones all ready to go just the way you want them. Don't fool with rebuilts.

Don't bother trying to cobble together a prehistoric timing meter on ebay, just get a Ferret With that and any standard aumotive induction advance type timing light, you are all set, and no more obsolete technology