Tune-Up Time!

SComp23 · #1 09-22-2005, 08:38 AM

I bought my truck used at about 52,000 miles, it now has about 73,000. I am not too sure about the prior history, so I decided I would go ahead and do a tune up after noticing pretty poor fuel mileage. I am definately doing cap, rotor, plugs, I have a K&N and I just cleaned that, I just got a fuel filter 2,000 miles ago. What else should I get? Wires? O2 sensors? I will definately use the Marvel Mystery oil like BlazerLT suggested, I used Seafoam last time, but that was almost a year ago! Thanks for your help guys!

Rick Norwood · #2 09-22-2005, 01:30 PM

Quote:

Originally Posted by SComp23

I bought my truck used at about 52,000 miles, it now has about 73,000. I am not too sure about the prior history, so I decided I would go ahead and do a tune up after noticing pretty poor fuel mileage. I am definately doing cap, rotor, plugs, I have a K&N and I just cleaned that, I just got a fuel filter 2,000 miles ago. What else should I get? Wires? O2 sensors? I will definately use the Marvel Mystery oil like BlazerLT suggested, I used Seafoam last time, but that was almost a year ago! Thanks for your help guys!

PCV Valve, and check your wires for corrosion when you swap the cap.

SComp23 · #3 09-22-2005, 02:33 PM

I am away at school right now, and I don't have the time/space to do this myself. How much, a conservative estimate, should this all run me?

BlazerLT · #4 09-22-2005, 05:38 PM

US$100 or less.

Do it in the parking lot.

Rick Norwood · #5 09-22-2005, 05:50 PM

Quote:

Originally Posted by SComp23

I am away at school right now, and I don't have the time/space to do this myself. How much, a conservative estimate, should this all run me?

If you can't do the work yourself, you can expect to pay $200+ at a garage.

SComp23 · #6 09-22-2005, 06:15 PM

I seriously think I am only getting like 225 miles to the tank, maybe a bit more, do you think just a tune up will help this average out, or does it appear to be something more serious. Also, how are Magnaflow mufflers, I am tired of running a straight pipe because it is so damn loud for one and for two I have no torque.

BlazerLT · #7 09-22-2005, 06:23 PM

do the cap rotor and plugs first before anything.

use the proper AC delco Platinum plugs gapped properly.

SComp23 · #8 09-22-2005, 06:25 PM

Could I really be losing that much mileage because of just that?

BlazerLT · #9 09-22-2005, 06:27 PM

Quote:

Originally Posted by SComp23

Could I really be losing that much mileage because of just that?

Oh for sure bro.

BlazerBoyLT98 · #10 09-22-2005, 07:10 PM

I was getting about 175 miles to a full tank (18 gallon tank) told the car dealer I bought it used at something was wrong and they did a full tuneup plus replaced the spider and now for the past 55k miles I am getting anywhere from 300 to 350 to a full tank depending on how I am driving. and just about 225 when I am towing something heavy and using drive instead of over drive

SComp23 · #11 09-22-2005, 07:16 PM

Awesome, I am definately going to be getting a tune up, sounds like a good start, also, should I be replacing those O2 sensors, My truck has over 70k, and I am not sure if they have ever been replaced. Nevermind I just answered my own question of course I should! Any thoughts on a Magnaflow muffler?

rlith · #12 09-22-2005, 07:27 PM

Quote:

Originally Posted by BlazerBoyLT98

I was getting about 175 miles to a full tank (18 gallon tank) told the car dealer I bought it used at something was wrong and they did a full tuneup plus replaced the spider and now for the past 55k miles I am getting anywhere from 300 to 350 to a full tank depending on how I am driving. and just about 225 when I am towing something heavy and using drive instead of over drive

Probably was dumping fuel at the CPI level. Glad you
got you baby better

jsgold · #13 09-22-2005, 07:33 PM

Would get a fuel filter on it too, if you are not sure how old it is. Cheap insurance against a fuel pump failure. Should be replaced every 20K in my opinion. Also check the serpentine belt. Plan to get a transmission flush and filter too, sometime soon if you plan on keeping this for a long time. Get this done at a reputable transmission shop. Cost should be $120-$130 for a total flush and filter change. As your truck gets closer to 100K would get the fluids changed in differentials too, and radiator flush also(depending on whether you use green or orange fluid. Refer to your manual)

SComp23 · #14 09-22-2005, 07:57 PM

I just did the differential maybe 4k miles ago, the gasket blew and I had to fix it. The fuel filter is 2k miles old I believe. How do you know if it is dumping fuel at the CPI level? Does that sound likely at 73k miles?

BlazerLT · #15 09-22-2005, 08:19 PM

Quote:

Originally Posted by SComp23

I just did the differential maybe 4k miles ago, the gasket blew and I had to fix it. The fuel filter is 2k miles old I believe. How do you know if it is dumping fuel at the CPI level? Does that sound likely at 73k miles?

You don't have CPI so don't worry about it.

You have CSFI which is the newer system.

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