• Welcome to The Truck Stop! We see you haven't REGISTERED yet.

    Your truck knowledge is missing!
    • Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
    • We have tons of knowledge here for your diesel truck!
    • Post your own topics and reply to existing threads to help others out!
    • NO ADS! The site is fully functional and ad free!
    CLICK HERE TO REGISTER!

    Problems registering? Click here to contact us!

    Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!

Checking lift pump

What is the fitting thats down inside the IP that the 6 an fitting attache's to?

What size socket does the OPS take? Thank's.

Mark
 
You dont really have to take out that lower IP fitting but it isnt a bad idea to pull it out and make sure the little screens are clean, there is one in the bottom tip and obvious ones in my pictures. That and I bored out the fuel supply holes in it.

If youre getting the socket some parts stores may have what is actually called an OPS socket. The OPS is a common item on a lot of engines.

The one that seems too small may just need to be knocked on a little, as the electrical connector is a bit wide as it gets up into the socket, but it goes on.
 
buddy said:
You dont really have to take out that lower IP fitting but it isnt a bad idea to pull it out and make sure the little screens are clean, there is one in the bottom tip and obvious ones in my pictures. That and I bored out the fuel supply holes in it.

If youre getting the socket some parts stores may have what is actually called an OPS socket. The OPS is a common item on a lot of engines.

The one that seems too small may just need to be knocked on a little, as the electrical connector is a bit wide as it gets up into the socket, but it goes on.
Click to expand...


Autozone didn't have a clue as to what I was talking about, they couldn't find a lift pump or a OPS on their computor. Advance said they had 2 socket's and I remember the girl said the socket size wasn't on the package.

Mark
 
I'll try it again tomorrow and put a little more light on the subject.When your doing the extension hose mod on the OPS do you take off the elbow that the OPS is attached to?

Mark
 
Autozone usually has inexperienced checker people, not parts people. I went into napa asking to see large deep sockets and the guy asked if it was for an OPS and there was one hanging on their miscellaneous wall.

I did not remove that elbow fitting, but I suppose you could. I used a crows foot to tighten my extension hose onto that elbow.
 
buddy said:
Autozone usually has inexperienced checker people, not parts people. I went into napa asking to see large deep sockets and the guy asked if it was for an OPS and there was one hanging on their miscellaneous wall.

I did not remove that elbow fitting, but I suppose you could. I used a crows foot to tighten my extension hose onto that elbow.
Click to expand...


I thought about checking at Napa but their so darned high priced on some thing's. For instance my battery to the starter cable was half burnt through Napa had to order one for me $33 for a real piece of crap made in Mexico.I was in Autozone and they had a 2o cable made in the state's for $12, If I have to buy Chinese tool's I'm going for the lowest price.

Mark
 
This OPS must be a metric, like I said before 1&1/16'' is to big and 1'' is a little to small but my little ball peen hammer conviced it to cooperate with my 1'' deep well.

Mark
 
If you "convinced" it to work with a 1" socket you've probably knocked off the top electrical connection. It's not a problem with the old one, but the new one requires it to function!!
 
D2 Cat said:
If you "convinced" it to work with a 1" socket you've probably knocked off the top electrical connection. It's not a problem with the old one, but the new one requires it to function!!
Click to expand...


As a matter of fact D2 the socket was just deep enough and the OPS survived intact it didn't take much to get it to fit. I'm going to put the extension hose on it so it will be easy to get to when it goes bad.

Mark
 
racer55 said:
IIRC the socket needed is 1 1/8".
Strange you were able to install a new switch with a 1"
Click to expand...


No I was taking it out Racer so I could gain a little more room so I can change all the rubber fuel lines and it look's like they were needing it the ends were starting to crack they were GM hose's probably original .I'm going to install the OPS hose mod when it goes back together making it easier to change the OPS.

Mark
 
You don't want Autozone electrical parts unless they are new AC Delco,
Sometimes the cheap price and lifetime warranty isn't worth installing 5 before you get mad demand your money back and go buy what you should have in the first place.
 
Even with my OPS socket it just needs to like scrape the plastic on the connector a little to get down. When I get home from work I will just go measure the hex part.
 
jrsavoie said:
You don't want Autozone electrical parts unless they are new AC Delco,
Sometimes the cheap price and lifetime warranty isn't worth installing 5 before you get mad demand your money back and go buy what you should have in the first place.
Click to expand...



This OPS doesn't look very old but the only thing I can find on it is the number 68 so it's hard telling what it is.

I'm going to put together an order and get it from Rock Auto, Autozone can't even find it or the lift pump on their computor so they can order it.

Mark
 
When you order make sure you're getting AC Delco parts.

I 've had or have 7 6.5's and in my experience the AC Delco parts are better and last longer. Do the double relay mod and you'll be a happy man. You may never have to change the OPC again. My Tahoe is working fine with a known bad OPC right now. It's still putting out enough juice to run the relay and in turn the lift pump

RD400HP said:
This OPS doesn't look very old but the only thing I can find on it is the number 68 so it's hard telling what it is.

I'm going to put together an order and get it from Rock Auto, Autozone can't even find it or the lift pump on their computor so they can order it.

Mark
Click to expand...
 
You must log in or register to reply here.
Back
Top