installed injectors

[gjp]

I read about this once before but I cant find it now. I just installed my 50# injectors. What a pain in the... for a guy with fat fingers. Anyways for some reason it looks like the bottom is not all the way down. The rail is sitting lower then it was before by looking at the marks on the slot. also they feel loose. do the o-rings expand to lock them in??? the old ones were a bitch to get out, but the new ones can spin easy. Also I did not have any grease so I used motor oil. Hope thats ok. Thanks again.

 

[bezerk]

Re: installed injectors

normally i pressurize the system before assambling back the upper intercooler to look for leaks, they will only leak if you damage an o-ring, further than that you should be safe with motor oil, but just check them before you drive it.

 

[gjp]

Re: installed injectors

I dont have my tb yet so I cant start it up. if i just put the key to "on" will it pressurize enough to see if there are any leaks?


The tops are in there good but the bottoms are just sitting in there. The old one were kind of the same way. I had to strugle to get them off the rail.

 

[live1053rulz]

Re: installed injectors

Cool, just make sure you lube everything so it all goes smoothly. I hear they should be a bit loose and able to spin relatively easily. If they're in too tight they'll make a ticking sound; they'll be bottomed out on the manifold I guess and won't flow properly either.

 

[gjp]

Re: installed injectors

The old ones were tighter but after I took a good look at them I guess they are ok. Darn things took longer then I thought. As I was finnishing up USPS came by with my 3 bar map and TB gasket. Cool. I already had my old map sensor out. Now just waiting on my TB. Boy I hope it starts up when I am done.LOL

 

[SeattleSy#1255]

Re: installed injectors

The old ones were tighter but after I took a good look at them I guess they are ok. Darn things took longer then I thought. As I was finnishing up USPS came by with my 3 bar map and TB gasket. Cool. I already had my old map sensor out. Now just waiting on my TB. Boy I hope it starts up when I am done.LOL

One you do it a few times, you can do it in 10 min or so with the right tools. You should be able to get FP turing the truck to the "on" position.

 

[DynaGlide]

Re: installed injectors

I don't know about the motor oil as a install lube, but I think you're supposed to use silicone grease. You're probably okay though... I just don't think you're supposed to use anything that is partly solvent, namely WD40.

 

[gjp]

Re: installed injectors

The 2 bolts on tha pass. side were very hard to get to. What tool would make it easier??
The injectors slid on easy with the oil. The how to website I looked at said oil. I had some silicone grease but its for rc cars and I did not want to risk it. If the grease is just to lube it up for install the oil did a good job. I turned it to the on position and did not notice any leaks. I will check again before and after I start it up.

 

[gjp]

Re: installed injectors

I checked fuel pressure. It was over 55lbs. Could that be why I had a O2 reading of 1050+??? What should I run with the 50# and a phill chip?? I droped it down to 45LBS. is that ok? Also I used the jumper wire on the firewall to run my fuel pump and I hear air comming out near my AFPR. I have a lot of vacuum lines disconected because my TB is out. is that the air I hear?? I saw no leaks on my new injectors.

 

[mrweelr]

Re: installed injectors

I'm running 40psi base fuel pressure (vacuum line disconnected from AFPR) with the Phil Long chip. Steven (LIVE1053RULZ) is running 45psi, but I think he's been playing with it to dial it in. My truck runs stronger with the lower base pressure and I watch my WBO2 to make sure AFR is 11.5 to 12.1 at WOT. 1050 O2Mv reading in your scan tool is rich. I would shoot for low 900-950 if you can get away with little or no knock at those values. Steven and I are both over in Santa Clara if you want to meet up and talk shop/tune sometime.

 

[gjp]

Re: installed injectors

Thank you. The 1050 was with stock injectors at 55 psi. I just picked up a guage today.
after I get it running I would like to head over there some weekend and BS.

 

[wheels]

Re: installed injectors

Also I used the jumper wire on the firewall to run my fuel pump and I hear air comming out near my AFPR. I have a lot of vacuum lines disconected because my TB is out. is that the air I hear?? I saw no leaks on my new injectors.

I just installed my AFPR and with the pump jumpered i heard the same air-ish noise from my AFPR. I assume its normal.

 

[SeattleSy#1255]

Re: installed injectors

The 2 bolts on tha pass. side were very hard to get to. What tool would make it easier??
The injectors slid on easy with the oil. The how to website I looked at said oil. I had some silicone grease but its for rc cars and I did not want to risk it. If the grease is just to lube it up for install the oil did a good job. I turned it to the on position and did not notice any leaks. I will check again before and after I start it up.

What bolts...the upper intake?

 

[live1053rulz]

Re: installed injectors

Thank you. The 1050 was with stock injectors at 55 psi. I just picked up a guage today.
after I get it running I would like to head over there some weekend and BS.

I'm up for BSing this weekend. I still can't get my DM to work! And my hard drive just crashed on my laptop, so I'm trying one of our older ones... Let us know what you're up to.

 

[mrweelr]

Re: installed injectors

I'll be installing an Edelbrock polished alum. water pump and RPM brake booster hose on Saturday. I'll give you a ring after that stuff is all done. I'm going to Sears Point for Wednesday night drags next week, assuming it doesn't rain.

 

[live1053rulz]

Re: installed injectors

Sweet, let me know if you want me to come over and help Saturday, or keep ya company or whatever. I think I'll be around. Lets hope for no rain on Wednesday.

 

[gjp]

Re: installed injectors

I was taking about the bolts that hold the Fuel rail down. The one under the fpr is a hard to get to.

I just got my tb so I just have to install my computer and my tb and hopefully it will start. Wednesday drags sounds fun. Hopefully I can get out soon.

 

[live1053rulz]

Re: installed injectors

I know, that back nut is hard to get to. Let us know how she runs...