Extenter
Cambridge Ont
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Joined: 05/05/2007
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Just wondering if anyone has done high mileage on their plugs without problems. To change them on my van is a real pain i wonder how far I can push it.
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sdaly
Southern California
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Joined: 08/16/2005
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Extenter wrote:Just wondering if anyone has done high mileage on their plugs without problems. To change them on my van is a real pain i wonder how far I can push it.
I'm at 85,000 miles and haven't had to change any spark plugs. No problems so far! 
2005 Dodge 2500 CTD SLT 4X4 Quad Cab, Long Bed, G56 6-speed
1999 Sandpiper 26FK Travel Trailer
Tekonsha Prodigy Brake Controller
Twin Honda EU2000i generators
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Roadtrippin
Pennsylvania
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Joined: 03/22/2006
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Had a 1997 Ford F-150 and it went 110,000 before needing to be replaced. But when they fouled I was pulling a trailer and it wasn't a pleasant final 50 miles.
* This post was
edited 08/18/08 06:37pm by Roadtrippin *
2003 Dodge 2500 RAM 4X4 Quadcab Cummins High Output
Banks Six-Gun/Speedloader/Pyro,Trans Temp,and Boost gauges. Mag-hytec covers.
2006 Cedar Creek Silverback 5th Wheel (31LBHBS)
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SETenn
Benton TN
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Joined: 02/13/2006
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We made it to 116,000 miles on our Chrysler minivan but they looked rough when they were pulled. The van ran smooth before changing them but we did see a difference in mileage after changing them.
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jplunkett
Virginia
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50,000 on the F150 with no problems to date.
safe travels,
John & Elizabeth Plunkett
Louisa, Virginia
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amxpress
Clayton, NC
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Joined: 04/14/2007
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I tried to find where the spark plugs were loacted on my RAM 2500 CTD, then remembered that I don't have any, diesel, you know.
How long your plugs last depend on a number of things.
Later model engines with fuel injection, individual ignition coils, high energy electronic ignition, and iridium plugs often can go 70K+ miles on a set of plugs.
I would check your manual and see what Chevy (or GMC) receommmends.
Your performance, emissions, and gas mileage drop gradually as your spark plugs wear. You might not even notice it.
Also, using quality spark plugs in the proper heat range helps. i.e. AC Delco, NGK, Denso, etc.
2007 Dodge RAM 2500 Quad Cab w/6.7 Cummins
2008 Palamino Sabre 31RKTS
Reese 15K Pro Series manual slide
Prodigy
Firestone Air Bags
Travel in peace...leave the M-I-L at home.
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Jarlaxle
New England
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Joined: 11/18/2006
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My Caprice had 120,000 miles on the original Delco plugs (and wires). Until then, it ran perfectly (though they went from that to "barely running" in a hurry.
John
1984 Ford B-700 school bus conversion, Thomas body
A bunch of other vehicles
3 nutty cats (Maya, Vierna, Briza)
One lazy dog (Marmaduke)
One wife (Liz)
"A wasted youth is better by far than a wise and productive old age"
-Jim Steinman
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charwan
Dawsonville, Ga.
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I've got everybody beat so far. 150,000 and no miss yet. That's on a 99 Ranger.
N4FAP
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coolbreeze01
Redding, Ca
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Joined: 08/24/2006
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I don't remember changing plugs since we started using unleaded gas 
2008 Dodge 3500 CTD LB SRW 4X4 6-Speed Auto
P3 Blue Ox Sway Pro
2007 Komfort 212
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Extenter
Cambridge Ont
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Thanks for the input,It's due for an emissions check in November (do you have them in the States?)I will change them if there is a problem, now at 100000 miles. O.P.
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