Should I add an EGR?

[83 Scottsdale]

I have a 1983 K10. The original engine was a 305 but it was swapped to a crate 350 before I bought it. I was diagnosing a problem my truck had, and I read somewhere that the EGR could be plugged which was causing the problem. So I looked at my engine and I found that I don't have an EGR. There is a plate bolted on where the EGR should be and the manifold vacuum line is plugged off. So I'm thinking that when they swapped engines, they didn't put the EGR on. I did more research on EGR's and apparently they add 1-2 mpg. My question is if I should buy and EGR and install it, or just leave it? I think they run about $50-70 so would it be worth it or not? Also, would it mess with my timing? Any help is appreciated!!!

Thanks.

[68c10owner]

I took mine off and the truck runs better. Cant comment on the mileage but if you do add it you will need more than just the EGR valve. You will need the EGR solenoid and the valve that goes into the air cleaner. If you dont need to smog your truck leave it off.

[83 Scottsdale]

Originally Posted by 68c10owner

I took mine off and the truck runs better. Cant comment on the mileage but if you do add it you will need more than just the EGR valve. You will need the EGR solenoid and the valve that goes into the air cleaner. If you dont need to smog your truck leave it off.

Ok, thanks. I'm going to assume that my truck doesn't already have those either. I cant find any pictures or diagrams of it for my truck, so I don't know where everything plugs in at. Do you have any pictures of yours or know where I could find one?

Thanks.

[Dead Parrot]

It may have had one originally. But since the motor was swapped and it sounds like the PO removed most of the emissions, probably best to proceed as though it won't have emissions. Adding them back piecemeal is a good way to add to your frustration level.

What's the problem you are trying to fix?

[Tom]

Who said EGR adds mileage? Think of it this way: how does adding spent exhaust with no energy to put into the combustion cycle for motivating the truck down the road add mileage? Its purely for emmisions.
EGR, or the lack of, is not causing your problems.

[83 Scottsdale]

Well, my problem has been dubbed "the morning miss". Early in the morning when I first drive it, I go up this small hill at low rpms and the engine will miss. I've read that it could be the timing, it could be moisture in the distributer, it could be a pinhole in a spark plug wire, or it could be the EGR crapping out. That's what got me looking into the EGR stuff. It seemed to be the most common problem. I don't know what the issue on my truck is but I find that if I just warm up the engine a bit longer then it doesn't happen. So I'll just stick with warming up my engine until I can figure it out for sure. And to the one saying it doesn't increase mph, I read that because it recirculates the exhaust, your engine uses less fuel, and the oxygen percentage is lower. This all causes the timing to be a bit more efficient. That's why I wanted to add a EGR. I read stories where people bought an EGR delete kit and their milage went down. I guess it just depends on the vehicle it's in.
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[kody1234]

it may just need a tune up.

[hatzie]

Is the EGR valve still on the intake or did the PO install a proper block off plate?

[83 Scottsdale]

Originally Posted by hatzie

Is the EGR valve still on the intake or did the PO install a proper block off plate?

There is a block off plate where the EGR should be. And I don't see the EGR solinoid. But I do see the vacuum tube from the manifold was just cut and had a screw blocking off the line.
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[68c10owner]

My 85 has this same problem. it misfires until it warms up. Probably a EGR solenoid which I believe to be the same issue as mine. I removed my EGR and installed a plate and it runs better but still have that misfire in the morning. After about 30 seconds it goes away. But if your truck doesnt even have a EGR solenoid then I dont see how that can be the problem.

[83 Scottsdale]

Originally Posted by 68c10owner

My 85 has this same problem. it misfires until it warms up. Probably a EGR solenoid which I believe to be the same issue as mine. I removed my EGR and installed a plate and it runs better but still have that misfire in the morning. After about 30 seconds it goes away. But if your truck doesnt even have a EGR solenoid then I dont see how that can be the problem.

Yeah, I was diagnosing the problem and I went to check my EGR and then realized that I don't have one. So then I was wondering if I should have one or not. So that's why I was asking you guys if I should install one or not. It looks like it will cost too much anyways. Not worth it too install one.
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