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Old 12-22-2014, 10:15 PM   #1 (permalink)
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Need foolproof instructions on changing fuel filters

I plan on changing them tomorrow and do not want any drama

Should the engine be warm? Tank full? Does the order matter, primary then secondary? Fill both with just diesel fuel?

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Old 12-22-2014, 10:25 PM   #2 (permalink)
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fill them both, take out a few glows on each side, turn the engine until mist comes out from the glow plug holes(you might need to let air out of filters with bleeder screw), reinstall and start.... if you are running mechanical fuel pump, this method works well, if you have an electric pump, you can just let air from the bleeder screw on filter, and crank... be careful not to crank to long, crank, rest, crank, rest.. no longer than 10-15 seconds of cranking, then let the starter cool for 20-30 seconds...

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Old 12-23-2014, 12:44 AM   #3 (permalink)
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I think your 83 has spin on filters. If you have a vacuum pump at the rear you need to pull it (15mm) to get the secondary filter out which is mounted on the intake manifold. I use a siphon to fill my filters from the tank then install. You have to carry them like the egg in the spoon thing. Some guys fill the new filters with the fuel from the old ones but i dont dig that. Turbo says pull glows but i have had luck with filling my filters and just running the air out. Also if your truck is set up like my 82 and you are running a mechanical pump dont open the bleeder on the primary (larger) filter because it will just suck air in. For some reason the fuel feed runs from the tank straight to the primary filter then down to the mechanical pump on the block then back up to the secondary filter. Stupid right. Anyways if you have an electric lift pump youll be on easy street, good luck. BTW I was on vacation last week on the gulf side. Could have helped you out if you posted a week earlier
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my guess would be shocks
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Last edited by JCDiesel; 12-23-2014 at 12:47 AM.
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Old 12-23-2014, 07:00 AM   #4 (permalink)
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Quote:
Originally Posted by turbonator View Post
fill them both, take out a few glows on each side, turn the engine until mist comes out from the glow plug holes(you might need to let air out of filters with bleeder screw), reinstall and start.... if you are running mechanical fuel pump, this method works well, if you have an electric pump, you can just let air from the bleeder screw on filter, and crank... be careful not to crank to long, crank, rest, crank, rest.. no longer than 10-15 seconds of cranking, then let the starter cool for 20-30 seconds...

Yes, I have a mechanical pump but I can not take out any glow plugs

I have been using plug-in cord for months because GPs are stuck and I'm too afraid of breakage to let anyone remove them. Still looking for someone competent. But that's another story
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83 6.2 Silverado 20 Chevy Suburban 2WD

100,000 miles on replaced engine

Tranny is a 700R4 and rebuilt...keep your fingers crossed for me

Gently treated and rarely used to pull anything
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Old 12-23-2014, 07:10 AM   #5 (permalink)
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Quote:
Originally Posted by JCDiesel View Post
I think your 83 has spin on filters. If you have a vacuum pump at the rear you need to pull it (15mm) to get the secondary filter out which is mounted on the intake manifold. I use a siphon to fill my filters from the tank then install. You have to carry them like the egg in the spoon thing. Some guys fill the new filters with the fuel from the old ones but i dont dig that. Turbo says pull glows but i have had luck with filling my filters and just running the air out. Also if your truck is set up like my 82 and you are running a mechanical pump dont open the bleeder on the primary (larger) filter because it will just suck air in. For some reason the fuel feed runs from the tank straight to the primary filter then down to the mechanical pump on the block then back up to the secondary filter. Stupid right. Anyways if you have an electric lift pump youll be on easy street, good luck. BTW I was on vacation last week on the gulf side. Could have helped you out if you posted a week earlier
Yes..mechanical pump. I put diesel in a Gatorade bottle I plan to use

I don't know about a vacuum pump but I think the secondary is behind the air filter. I may change the primary today and do the other another day

Hope you enjoyed your vacation. Good thing I didn't know you were here. My burb would have worked you to exhaustion
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83 6.2 Silverado 20 Chevy Suburban 2WD

100,000 miles on replaced engine

Tranny is a 700R4 and rebuilt...keep your fingers crossed for me

Gently treated and rarely used to pull anything
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Old 12-23-2014, 09:07 AM   #6 (permalink)
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Ya secondary is on the back side of the intake behind the air cleaner. Good call on tackle it another day. Next time maybe you'll catch me...
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81 Chevette 1.8 Isuzu diesel 24,000 miles
82 Park Ave. 5.7 DX Stock with Stanadyne FWS and Filtermag
81 Riviera 5.7 Donor vehicle for The 82 Park Ave Compliments of 57Diesel
82 C10 2WD 6.2 Parts Truck
91 Suburban 2500 4x4 6.2 Bad Transmission
85 Cadillac Deville factory 4.3 Oldsmobile Diesel
91 GMC Sierra K1500 6.2 NA Bad Transmission
94 K3500 CC DRW 6.5TD All the normal stuff done. DE exhaust Custom Parker Racor Rust free beauty
Quote:
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my guess would be shocks
Quote:
Originally Posted by alpacalips View Post
Even the guys who own them aren't 5.7 guys.
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Old 12-23-2014, 09:31 AM   #7 (permalink)
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One big tip is to un plug the green wire on the IP, it's the cold advance solenoid and it free's up the return system to speed the air getting out of the filter/fuel system, get it running then simply plug the wire back in.
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Old 12-23-2014, 01:03 PM   #8 (permalink)
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Quote:
Originally Posted by Bigboytoys View Post
One big tip is to un plug the green wire on the IP, it's the cold advance solenoid and it free's up the return system to speed the air getting out of the filter/fuel system, get it running then simply plug the wire back in.

Can you be a little more specific on where the green wire is? I only know green wires on the Glow Plugs
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100,000 miles on replaced engine

Tranny is a 700R4 and rebuilt...keep your fingers crossed for me

Gently treated and rarely used to pull anything
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Old 12-23-2014, 04:44 PM   #9 (permalink)
JCDiesel
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On the injection pump right in front of the air cleaner. There is one pink and two greens.
__________________
81 Chevette 1.8 Isuzu diesel 24,000 miles
82 Park Ave. 5.7 DX Stock with Stanadyne FWS and Filtermag
81 Riviera 5.7 Donor vehicle for The 82 Park Ave Compliments of 57Diesel
82 C10 2WD 6.2 Parts Truck
91 Suburban 2500 4x4 6.2 Bad Transmission
85 Cadillac Deville factory 4.3 Oldsmobile Diesel
91 GMC Sierra K1500 6.2 NA Bad Transmission
94 K3500 CC DRW 6.5TD All the normal stuff done. DE exhaust Custom Parker Racor Rust free beauty
Quote:
Originally Posted by smackzed View Post
my guess would be shocks
Quote:
Originally Posted by alpacalips View Post
Even the guys who own them aren't 5.7 guys.
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Old 12-23-2014, 04:50 PM   #10 (permalink)
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here is a small picture that shows where it is. It is labeled with a faint green color that is hard to read, but points it out pretty well.

You don't need to remove the glow plugs, it just makes it easier for the engine to turn over and doesnt drain the batteries as easily. If you pre-fill the filters you will probably be fine just cranking it over. It might take a few tries to get it started and worst case scenario is you might need to put a battery charger on for a bit and then try again.

The last time I changed my fuel filter I filled the filter, installed it and it only took 2 maybe 3 tries to get it started. And I didnt pull any glow plugs either.

Don't worry about it too much, it will go smoothly and then you will be a seasoned pro for next time

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Last edited by happypunch; 12-23-2014 at 04:50 PM.
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