Jump to content

Spark plugs? NGK? BOSH? e3?

paul_driver

Recommended Posts

  • 1 month later...
VTFirefly Enthusiast

VTFirefly

Posted
Posted

I changed plugs today. I had put in a set of Bosch Platinum Plus 80,000 miles ago & today I replaced them with AC Delco Professional Platinum. We'll see how they do. The Bosch didn't look too bad. I was going to post a picture but I'm a noob and couldn't figure out how.

intheburbs Enthusiast

intheburbs

Posted
Posted

I replaced the plugs on my '01 right at 100k miles. They still looked good, and the engine was running fine. They were AC Delco.

 

I went with NGK Iridiums, buying into the iridium hype at the time. Around 185,000 miles, the engine began idling rough, mileage tanked, and it was harder to start. Went south pretty quick. When I pulled the plugs, they looked terrible - eroded electrodes.

 

I went back to AC Delco. No more aftermarket plugs for me.

00Silverado4x4 Senior Enthusiast

00Silverado4x4

Posted
Posted

It's not really hype as it's what GM designed the engine to use. The iridium is to allow longer intervals between changes, kind of like synthetic vs conventional oil in your engine.

Singer-Man Enthusiast

Singer-Man

Posted
Posted

I put a set of ACDelco 41-122 Professional Iridium in my 5.3L L33; I'm happy with them.

SouthernSilveradoGuy85 Senior Enthusiast

SouthernSilveradoGuy85

Posted
Posted

kicks in to 4th at 41 or 42 mph at 1200 rpm

 

 

But I never get it past 2500 rpm most days. I am having it tuned with volant cold air intake, egr delete, and deleting the cats

 

 

He was being sarcastic because of the typo in the OP. You accidentally put 7.73 instead of 3.73.

 

As for spark plugs, as long as you get a top brand I don't see much of a different in performance. I've been using Bosch for awhile in my other trucks, not sure what brand I'll go with on this one.

uh6tdrvr Enthusiast

uh6tdrvr

Posted
Posted

I have never had luck with anything other than the Delco iridiums in any of the 5.3's I have owned. IMO if you want to get another 124k put the same one that you are taking out in. There is no magic 25hp spark plug out there.

Orilley has a rebate for $2 per plug back right now also. Just put new ones in my 09 and they were on sale for 5.69 so I will end up paying 3.69 per plug.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • ChristopherDobson
      Vehicle Payments

      By ChristopherDobson · Posted

      Monthly payment is only part of the equation. With today's prices and interest rates, I'd look at the total monthly cost: payment, insurance, registration, fuel, maintenance, and expected repairs. A vehicle that fits comfortably into your budget is usually the better choice than stretching for a higher trim. I've also kept my vehicles longer over the past few years. New cars have gotten expensive enough that driving one for 10+ years, while staying on top of maintenance, often ends up being the most cost-effective approach.
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      10 Ford and Chevy engines proven to reach 300,000 miles   You may note a common 3K OCI on this list of gas motors. I skipped over the diesels. Dh'O. 
    • jake111
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By jake111 · Posted

      Thanks newdude!  By the time manual selection is needed, I'm probably too much of a control-freak to depend on the transmission sensing braking to activate automatic downshifting.  I would be anticipating the situation and already be manually downshifting.   This truck replaced a 2004.5 LLY diesel with the Allison 5-speed.  Putting it in T/H made noticeable differences (when the torque converter locked, upshift points, downshift behavior).  On this 2024 gasser with the 10L1000 I haven't been able to detect much, if any, difference.  Ok, I can never tell now when the torque converter locks up.  But I also don't notice differences in shifting.  For downhills, I've probably already manually downshifted by then anyway.  Since it's also more awkward (than the 2004.5) to engage/disengage I don't even bother.  Or maybe it doesn't really matter with just a 3k lb. camper in the bed?   Thanks also for the list of reasons the charging system might select various voltages.  However, what I am seeing doesn't fall into any of those categories.  It very definitely, and very consistently, rises after coasting/braking.  Maybe not immediately, but not very long after coasting/braking.  Very consistently drops voltage when no longer coasting/braking.  It might also be interacting with the camper battery charging (I might disconnect the camper and see if it changes the charging behavior).  I also need to recheck turning on headlights for when I want to force it to charge the camper.   Another JR, in June I converted the camper to LiFePO4.  Since it's not a good idea to try to charge lithiums directly using truck, I installed a Victron Orion XS DC-DC charger (which BTW is AMAZING!!).  Being cheap, I only had to buy that one item (besides the battery, of course) to do the conversion.  The camper OEM 120v battery charger (only 19 years old and works perfectly) and the truck feed the input to the DC-DC charger (not at the same time).  But I didn't want the camper charger feeding back to the truck so I kept the old separator.  I considered replacing the separator with a 30amp diode but that means more work and might add another 1/2 volt drop.  One thing that surprised me was the voltage drop over the long 10awg wire run, so I can only charge smoothly at 8 amps (because the DC-DC charger is completely configurable).  Another reason I don't want an added voltage drop with the diode.  I might also be a little lazy but all this work is being done under the sink with a small cabinet opening.    
    • davester
      cam upgrade in CA

      By davester · Posted

      apparently CA smog is (or at least was)  checking that the vehicle is using the oem and/or a ca smog approved tune, so I expect you'll fail inspection doing it.
    • davester
      Possible lifter tick after DOD delete

      By davester · Posted

      yes, leaking exhaust will mess up o2 sensor readings, which in turn messes up fuel trims.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...