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09-13-2013, 04:21 PM
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#1
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Member
Join Date: Oct 2012
Location: Lewes, DE
Posts: 89
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Spark plug blowout
On my way to the Hershey show when I heard a loud pop and lost acceleration. Yep the #3 spark plug blew out of the cylinder head. While I'm waiting and waiting for Good Sam to find a tow truck and repair facility, here is my question.
The engine had a "miss" in it and so the engine coils and plugs were replaced. Yesterday. Think this could be related? Since the repair is probably going to require a new cylinder head (basing this on how much of the cylinder came out attached to the plug) how do you think I should address this with my local repair facility that did the service?
Linda
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09-13-2013, 04:32 PM
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#2
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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I would sure think so. Assuming you have a Ford V-10 I bet they partially stripped the threads in the head taking the plugs out. There's a protocol that Ford publishes. Bet they didn't follow it.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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09-13-2013, 04:40 PM
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#3
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Senior Member
Ford Super Duty Owner
Join Date: Jan 2011
Location: Lowell, Arkansas
Posts: 7,301
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JamesXXX will probably chime in here shortly as he does on the Ford stuff and he knows his Ford stuff. Yes you should have a good case. I'd pull another plug just to make sure they used anti-seize compound. There is a protocol to R&R those plugs. Usually pulling when engine is stone cold is what I've always done and was recommended by Ford. I was ASE certified at the time so they trusted me to perform my own work.
You mentioned that a large chunk of head came with it. That's odd to say the least. Those blown plugs can usually be fixed with a heli-coil but again JamesXXX should respond with some good advice.
Did you request that they change all the coils or was it their idea?? That's a lot of $$$$ to change all the coils when maybe all didn't need to be changed. I once had a rodent chew through my coil wires. I just spliced it and it was good for another 8 years.
TeJay
__________________
TeJay Auto Instructor/4-yrs USAF/ Liz: RN/ WBGO 2014 Vista 30T/ F-53/CHF/5-Star/Koni * Bella & Izzy * Golden /Cocker mix/ Louie The Cat* All Retired
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09-13-2013, 04:44 PM
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#4
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Senior Member
Monaco Owners Club
Join Date: Jul 2013
Location: monroe mi.
Posts: 264
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i would call the repair facility and give them a heads up that they are going to need to order a new head and gasket set and set time aside for them to get your rig back up and running. i would believe there is no way they could not or would not take full responsibility for the mishap.
best of luck and i hope they stand behind there work.
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James & busa the queen of the rv dogs
you can't put a price on memories 1998 safari serengeti xi 05 jaguar str 2010 mariner
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09-13-2013, 04:53 PM
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#5
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Member
Join Date: Aug 2013
Posts: 87
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I'm betting they over torqed the spark plug. That is a common problem with the early v-10 engine.
__________________
2005 Damon Challenger
2007 HHR toad
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09-13-2013, 07:26 PM
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#6
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Registered User
Join Date: Mar 2013
Posts: 1,919
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Because the plug came out, I would suspect that you have a V10 with a 2 valve head. The 3V motors had a tendency to be hard to remove. When I do spark plugs, I always use hand tools on the 2V heads. Even removing them out of the head I use hand tools. I would suspect the plugs were over torqued. Especially since you just had them replaced. Would not be surprised they use air tools till it stopped. If it was me, I would use a digital torque wrench and check the break away torque for several of the spark plugs. This why you get a mean average. Then torque them back in to 11 LB-FT. This is the torque spec for a 2002 V10. Then check the break away torque on a properly torqued spark plug. This should give you an idea on if they were over torqued or not. You can get a thread repair kit from places like NAPA and Autozone. These are pretty much helicoils that work really well. You will need the updated Motorcraft spark plugs with the longer threads though. I would hope they used Motorcraft spark plugs that have the long thread count.
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09-13-2013, 07:49 PM
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#7
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Senior Member
Monaco Owners Club
Join Date: Dec 2010
Location: Kamloops, BC. Canada
Posts: 985
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Blew a head gasket on my 2000 Pace Arrow V10.
Flagstaff RV quoted 22-24k to replace engine.
Ford did the complete job....new motor, labor,
100k warranty, for 8900.00
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09-13-2013, 08:28 PM
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#8
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Registered User
Join Date: Mar 2013
Posts: 1,919
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Quote:
Originally Posted by luckyd
Blew a head gasket on my 2000 Pace Arrow V10.
Flagstaff RV quoted 22-24k to replace engine.
Ford did the complete job....new motor, labor,
100k warranty, for 8900.00
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what happed? I don't think I have ever heard of a blown head gasket on any triton engine. They use MLS (multi layer steel) gaskets and im pretty sure they cannot blow. If there was a head gasket issue, why could the engine not have been repaired.
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09-13-2013, 08:40 PM
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#9
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Senior Member
Monaco Owners Club
Join Date: Dec 2010
Location: Kamloops, BC. Canada
Posts: 985
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Apparently with the aluminum and cast when a head gasket blows,
the danger of cracked crankshaft, warped heads, etc.: nobody will
warranty the work. The cost is just about equal to exchange of motors.
I did not find anyone that was willing to do the repair so was stuck with
a new motor.
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09-13-2013, 08:46 PM
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#10
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Registered User
Join Date: Aug 2012
Location: The Land Of Oz RVM17
Posts: 1,592
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This is a very well known design flaw by ford on the early 2V heads. They only have a few rounds of weak aluminum to hold the plug. If over torqued at all the threads will pull and the plug will blow out. Some times they will just blow out anyway. Ford should of recalled all of them years ago, but they just let the owners eat it. We had several of these early 2V head triton motors and never had a problem, but we never changed the plugs. Never made the 100K which is the normal service time for new plugs. Even on the newer 3V engines, torquing the plugs is very critical. They do have more threads and a longer plug to match.
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09-13-2013, 08:48 PM
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#11
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Registered User
Join Date: Mar 2013
Posts: 1,919
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Quote:
Originally Posted by luckyd
Apparently with the aluminum and cast when a head gasket blows,
the danger of cracked crankshaft, warped heads, etc.: nobody will
warranty the work. The cost is just about equal to exchange of motors.
I did not find anyone that was willing to do the repair so was stuck with
a new motor.
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I guess you are at the mercy of the available places that would work on it. It to late now but what happened? Did it overheat or something? Usually when a head warps, it is either machined flat or a good machine shop will basicly warp the head back into shape with heat. Then the head is reassembled back on the block. Unless it hydrolocked and stopped the engine, I cannot see why the crank would be suspect.
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09-13-2013, 11:38 PM
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#12
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Senior Member
Winnebago Owners Club Ford Super Duty Owner
Join Date: Mar 2009
Posts: 1,129
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Check out this site. He says many blowouts are because the plugs are UNDER torqued and rattle loose. He recommends 28 ft-lbs (see FAQ #51). Most of the info is in the FAQ section.
Blownoutsparkplug.com Ford Spark Plug Thread Repair
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'02 Adventurer 32V, Ford F-53, ours since 4/08,Hankooks, Konis, SeeLevel, CHF
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09-14-2013, 01:01 AM
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#13
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Junior Member
Winnebago Owners Club Ford Super Duty Owner
Join Date: May 2012
Posts: 27
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When I bought my recent Class C RV, I did a little research on the Triton engine. My understanding is that prior to 2005, the engine only had 4 threads in the aluminum head for the spark plug. Spark plugs blowing out were not uncommon.
If I had an older V10 engine, I am not so sure I would not carry the Timesert repair kit with me and the Motorcraft spark plug so they was available on the road.
The Timersert repair solution does not require head removal.
A video on the repair follows:
++ TIME-SERT Thread Repair ++ Ford spark plug blown out repair kit, repairing spark plug blow out with Ford spark plug thread repair
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09-14-2013, 07:20 AM
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#14
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Senior Member
Tiffin Owners Club
Join Date: Jul 2011
Location: Cape Cod
Posts: 360
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I use the "Time-Sert Thread Repair" kit in my shop. I have found this the best solution. This kit has even fixed a blown out fix that uses the HT spark plug. The kit that most auto part stores carry should be considered a temporary repair, like this one NAPA NOE 6003248 it contains a shorter boot new HT type spark plug and an adapter that goes into the damaged hole. This you could carry and utilize easier than the "Time-Sert" on the road. The "Time-Sert" would be the permanent fix in my opinion.
In my opinion there is no one thing that can cause the thread failure in those engines. In my shop most has lead back to detonation due to cheap gas. A few were to in proper replacement procedures. We service a large fleet of appliance repair vans E150's-E350's so I have a fair amount of data built up on these.
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