Wear differences with plugs
Thread Starter
|
Freshman User
Joined: Aug 2017
Posts: 27
Likes: 2
From: Colorado Springs
Wear differences with plugs
I just changed my plugs and the bottom plugs were heavily worn compared to the top plugs. I am assuming the PO changed the top plugs but neglected to change the bottoms. My truck is at 100K and the worst bottom plug was at .090 and the top was averaging around .055. I'm just wondering if I have to adjust my change interval due to greater wear on the bottom plugs.
More Turbo
Joined: Jul 2011
Posts: 594
Likes: 5
From: Full-time RV
Fleet Mechanic
Joined: Dec 2015
Posts: 1,521
Likes: 412
From: Washington Coast
You’re most likely right but I’ve learned the hard way to ask because when you assume it’ll come back and bite ya. I haven’t had the pleasure of working on the new gassers since I got outta being a mechanic 20 years ago. I was still working on carburetors when I got outta the trade.
Thread Starter
|
Freshman User
Joined: Aug 2017
Posts: 27
Likes: 2
From: Colorado Springs
Sorry, I made the assumption that in the SD area my sig would provide the necessary info.....2013 Ford F-250 SD XLT, 6.2L gasser. My new to me truck spent the first 98K miles as a fleet vehicle burning, I am assuming, a lot of CNG. Since CNG wears plugs faster than Regular Unleaded I know I have to reduce my change interval but I am curious if any other 6.2L owners have observed faster lower plug wear.
More Turbo
Joined: Oct 2016
Posts: 616
Likes: 13
From: Ofallon Mo
You’re most likely right but I’ve learned the hard way to ask because when you assume it’ll come back and bite ya. I haven’t had the pleasure of working on the new gassers since I got outta being a mechanic 20 years ago. I was still working on carburetors when I got outta the trade.
Thread Starter
|
Freshman User
Joined: Aug 2017
Posts: 27
Likes: 2
From: Colorado Springs
Trending Topics
Fleet Mechanic
Joined: Oct 2017
Posts: 1,704
Likes: 164
From: Southwest Ohio
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Fleet Mechanic
Joined: Dec 2015
Posts: 1,521
Likes: 412
From: Washington Coast
Actually I know a brand of heavy duty engines that still use carburetors running natural gas, Jenbacher out of Austria. Up until a couple of months ago they were part of GE. The series 3 was 35.5 cubic inches per cylinder and available in 12, 16, and 20 cylinders so up to 710.5 cubic inches and the series 6 was 66 cubic inches per cylinder and was available in 12, 16, 20, and 24 cylinders up to 1584 cubic inches. They have 3 others I just never worked with. All these had carburetors and up to 4 turbos on natural, CNG, BioGas, Land Fill, or sewage gas. We would tune em a touch rich to keep the plugs in em longer but running hard at full load and lean we get about 500 hours (3 weeks) on a new set, shut it down, clean and regap and go another 1000 hours (6 weeks) and pull and clean and regap during routine maintenance every 1000 hours. Our plugs would go 20,000 to 30,000 hours (2 1/4 to 3 1/2 years) but that’s running 24/7 at full speed base/full load.
Normally burning plugs are indicative of lean condition but then there are people that will never change a plug so you are probably seeing normal for the number of miles on the vehicle. Also the lower plugs have a tendency to burn/wear/open up more due to higher temperatures near the exhaust valves.
Normally burning plugs are indicative of lean condition but then there are people that will never change a plug so you are probably seeing normal for the number of miles on the vehicle. Also the lower plugs have a tendency to burn/wear/open up more due to higher temperatures near the exhaust valves.
Thread Starter
|
Freshman User
Joined: Aug 2017
Posts: 27
Likes: 2
From: Colorado Springs
Wow - what were those engines used for? It is interesting they could adapt carbs to run on CNG and such. Thanks for the info and it does make sense that the bottom plugs could run hotter due to location near the exhaust.
I may have to replace the Iridium's every 50k or less. I think I will check the wear every 10K or so to get an idea of wear rate.
I may have to replace the Iridium's every 50k or less. I think I will check the wear every 10K or so to get an idea of wear rate.
Thread
Thread Starter
Forum
Replies
Last Post