6.2 fuel problems
 

I recently blew the crank out on my 94 6.5l so i just pulled it ut and put a 1991 6.2l in. i have fuel to the filter bleed screw with no air, fuel is also at the T on the top front of engine. but cant get it to my IP. thanks for the advice

Check the last ditch screen on the fuel heater mast inside the fuel manager.
stanadyne part #29244.

Also check the IP fuel inlet-it has screens that can become plugged.

Are you sure that you connected the lines properly when you made the swap?
The water drain line goes to the filter manager side line while the IP line comes out the front.

If you replaced the IP feed line you may need to use a longer line with a loop in it to prevent any kinks,the stock line is molded for that reason.

The 6.2 has the square filter. And its a new filter too.

You said you transplanted a 6.2 short block in place of a 94 6.5 so I expect it has 6.5 accessories.
If that is not the case then the last ditch screen should not be a factor.

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Do you have fuel at the IP inlet and not from the injector lines?
Also do you have the 6.2 mechanical IP or the electronic 6.5 IP?

what i did was put a complete 6.2l in my 94. i wired my lift pump to an accessory under the dash so its on when the key is on.

Ok getting the picture now.
Make sure that the IP fuel return is not blocked,and make sure that the timing chain turns when the engine is cranked-if you remove the oil fill you can likley see the timing gears.

thank you i will look on Wednesday and get back. i think its the screens bc after awhile of bleeding and cranking i got some fuel out the ip (1991 6.2 ip) and i closed the lines and is started and ran for 10 seconds. then died and now no fuel at the ip. also the 6.2 engine sat for 3-4 yrs before i pulled it out to put in my truck

Pull the IP inlet fuel line and remove the IP inlet nipple-it has a couple screens that can get plugged.I would also run some fuel through that line to flush it out.

is it ok to have the lift pump hooked up in an accessory under the dash like i have it?

It will work just fine,but in the event of a crash and fuel being pumped all over even though the engine is off is a safety concern.

just pulled the intake off. then pulled off the hose at the ip and turned the lp on. and i got good flow all the way to the ip.... i pulled the nipple for the hose off and no screen.. is it further inside or is there not one on this pump. and when i went to take that nipple off the whole back part moved, that the nipple is fastened to... is that ok or is that for timing......
I also grabbed the numbers off the pump.
DB2829-4875 04875 10183951 6.2 Liter 1991

If there is no screen,then it can't be plugged-been too long since I had one of those pumps apart to remember for sure.

If fuel has made it that far,your trouble would almost have to be a timing chain/gear problem or the key in the IP drive flange must be sheared or the shaft could have broken inside the IP?

Did you check for any return line restrictions or blockage yet?

I had troubles bleeding my injection pump and lines so what I did was put an air nozzle on my main return line that goes back to the tank and put about 10 psi through it and it sent fuel to everything.

also i am putting my 6.5 heads and turbo on my 6.2. is there clearance problems with this setup. there heath heads the originals crack a while back. do you have any advice.

A 6.2 and 6.5 short block are the same engine except for bore size,no issues with the heads.

Get ARP heads studs that are usually listed for 6.2 and follow the instructions on them to the letter,also if the heads have been resurfaced you would do well to use +.010 head gaskets usually to maintain the compression rating as stock.
With a 6.2 short block the problem is less pronounced so standard head gaskets would likely be ok,I would have to do some calculations to be certain though.

whats the best place to get injector lines from.

IIRC the 6.5 injectors must use the 6.5 lines?

Ebay is as good a place as any for lines.

Just found these,might be what you need?
http://www.ebay.com/itm/6-5L-Diesel-...eed921&vxp=mtr

on my 6.2 i decided to just run the turbo and the 6.5 manifold and leave the head swap for another day. do i still need the vacuum pump. i have a turbo master from heath. the 6.5 always had the tm, idk what else the pump does?

depends if you have a S or F vin engine,the F vin only need vacuum for the wastegate,but the wastegate solenoid must still be connected to the wire harness to prevent codes unless the ECM is reflashed for the turbo master.

The S vin required vacuum for the EGR.

so if im running the 1991 6.2 i shouldnt need it then.

No need for the vac pump in that case.

ok thank you. also as far as my ip and ip lines is us diesel a good source for the ip and lines

I honestly don't know who to send you to for an IP,lines can be had almost anywhere though.

The 6.5 injectors would also have to be used as their shorter for turbo clearance

the 1991 injectors are the same size on mine it all fits. cant tell its a 6.2 unless you know what to look for.

the 6.5l i had in my truck originally had new Bosch hi flo injectors on it. Should i Run these with the 6.2l, instead of the 6.2l injectors. The 6.2l injectors are the shorts and as far as fitting the turbo they work. but when i took of lines i noticed they were rusty and the original ones. the engine has 175,000 miles. If i run the hi-flo's, will they work with my pump? I'm building for mileage not power. Also thank you for all the input.

The high flows will work fine.

If you mean marine injectors when you say high flow-they will be no problem but are no advantage at all without the marine IP pushing the fuel.
The IP is the bottleneck in the system,stock injectors will flow more fuel than the IP can send so I discourage people from buying marine injectors thinking they will get 40 more HP-they won't if that is the only upgrade.

I have the papers from the shop it before i bought it and it says Bosch Hi-Flo Injectors, Cradled main caps, Cry O2, Heath Heads, Max E Tork Prom, and bored .10 over. I just found it couple days ago in a folder he gave me. I guess he tried making a pulling truck and realized it couldn't compete with the big 3. The only reason i was contemplating swapping out injectors was only for the fact that they are newer. and the 6.2's look pretty ragged. and i have to replace the o rings in the 6.2 anyway.

The 6.5 injectors will work just fine provided the heads accept them,some are fine thread,some are coarse?

ok, also what exactly is cry o2, i heard some good bout it and some bad.

Looks like a kit to cool that air charge post turbo,not sure if it is water injection related or just intercooler sprinklers?
CryO2 System & Components | Exhaust Header Wrap and Thermal Performance Products | Design Engineering, Inc.

i knew it was to cool it off just didnt know if it was like water mist or not.

They have so many different products it is impossible to say without seeing what was installed.

I am buying my injector lines this week but idk which i need. I am running the 4875 J code ip on my 6.2l with my Bosch Hi-Flo Injectors off my 6.5l. The 1994 6.5 lines are bigger at the ip. and will 6.2l lines seal on the 6.5l injectors. I just dont want to order my lines and they be wrong so im double checking