Plug Blow out! - 2003-04 Mach 1 Registry Owners Club

og2stang · 10-02-2016, 07:48 PM

Friday nite was good air, so I thought I'd dig out the Mach and go run in the shootout at Little River. Friday's are back to 1/4! Car felt really good, only really hit it on a rural road, but then about Liberty Hill, 40mi from home it started to shake & pop, obviously down a cylinder! Figured it to be a coil, so I ordered a new set of MSD's. But then I took the COP cover off and wahhlaa!
The plug had blown out and destroyed the coil and boot.
When I went to re-install a plug, no luck, won't tighten.
Found out it is an issue with Modular Fords, so I guess I will look for somebody to repair it, Helicoil I guess!

TKat13 · 10-03-2016, 06:33 PM

Quote:

Originally Posted by og2stang

Friday nite was good air, so I thought I'd dig out the Mach and go run in the shootout at Little River. Friday's are back to 1/4! Car felt really good, only really hit it on a rural road, but then about Liberty Hill, 40mi from home it started to shake & pop, obviously down a cylinder! Figured it to be a coil, so I ordered a new set of MSD's. But then I took the COP cover off and wahhlaa!
The plug had blown out and destroyed the coil and boot.
When I went to re-install a plug, no luck, won't tighten.
Found out it is an issue with Modular Fords, so I guess I will look for somebody to repair it, Helicoil I guess!

Yep; that is an issue with the 03s.

01yellerCobra · 10-03-2016, 07:29 PM

Look for a Timesert or Lock and Stitch. They're better than a helicoil.

And send the MSD's back. Get a stock replacement.

VA-Mach1 · 10-03-2016, 08:33 PM

You Timesert kit 5553. I bought mine used one ebay. Used it, then resold it. Total cost when done was about 40 bucks. You can do it yourself or pay someone else a lot more. http://www.timesert.com/html/triton_repair.html

DSG2003Mach1 · 10-03-2016, 09:05 PM

Make sure you get the aluminum insert and as mentioned there are better choices than the heli coil. Check your other plugs while you're at it

lcaptmorg · 10-05-2016, 01:48 AM

Another vote for Timesert and stock coils

10-02-2016, 07:48 PM	#1
og2stang Registered User Join Date: Feb 2013 Location: highland haven , tx Posts: 51	Plug Blow out! Friday nite was good air, so I thought I'd dig out the Mach and go run in the shootout at Little River. Friday's are back to 1/4! Car felt really good, only really hit it on a rural road, but then about Liberty Hill, 40mi from home it started to shake & pop, obviously down a cylinder! Figured it to be a coil, so I ordered a new set of MSD's. But then I took the COP cover off and wahhlaa! The plug had blown out and destroyed the coil and boot. When I went to re-install a plug, no luck, won't tighten. Found out it is an issue with Modular Fords, so I guess I will look for somebody to repair it, Helicoil I guess! __________________ 03 DSG Mach IUP A/T C&L intake&85mm MAF VAP phenolic 1/2" intake spacer Diablosport Tune

10-03-2016, 07:29 PM	#3
01yellerCobra Registered User Join Date: Jan 2013 Location: San Diego, CA Posts: 1,104	Look for a Timesert or Lock and Stitch. They're better than a helicoil. And send the MSD's back. Get a stock replacement. __________________ New Ride: 2004 Mystichrome Cobra-Accufab SBTB and plenum, Steeda 2.8" upper, Bassani X, Borla Stingers, Mcleod RXT, MGW shifter, Level 5 halfshafts, chrome FR500's, Stiffler's FIT system and DS safety loop, GT pumps, BA3000, tuned by owner

10-03-2016, 08:33 PM	#4
VA-Mach1 Mach & Cheese Join Date: Mar 2014 Location: Richmond VA Posts: 797	Re: Plug Blow out! You Timesert kit 5553. I bought mine used one ebay. Used it, then resold it. Total cost when done was about 40 bucks. You can do it yourself or pay someone else a lot more. http://www.timesert.com/html/triton_repair.html

10-03-2016, 09:05 PM	#5
DSG2003Mach1 700 HP Mach Join Date: Nov 2003 Location: Orlando, FL Posts: 8,384	Re: Plug Blow out! Make sure you get the aluminum insert and as mentioned there are better choices than the heli coil. Check your other plugs while you're at it __________________ 03 dsg mach1 - MPR built 9.5:1 motor, D1, cams, ported intake, full exhaust, magnum t56, built rear, E85 etc... '12 F150 FX2 Supercrew with Ecoboost daily beater

10-05-2016, 01:48 AM	#6
lcaptmorg Registered User Join Date: Jun 2007 Location: Las Vegas Posts: 1,086	Re: Plug Blow out! Another vote for Timesert and stock coils __________________ 03 We call her Hooker. Stock Long Block 301/310 12.08@110 1.58 60ft 4400da Cams and intake 365/338 SAE 11.73@115 1.54 60ft @3400 ft DA 13.6:1 Cornfed NA 5.0 497/421 SAE 10.66@128 1.42 60ft 3000ft DA

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