Originally Posted by martyo
I am going to give this about a week and then I might pull them and adjust.
Thanks everyone for all of the advice.
Senior Member
I am going to give this about a week and then I might pull them and adjust.
Thanks everyone for all of the advice.
2018 F-250 6.7L Crew Cab 4x4
2013 Dodge Charge R/T Daily Driver/Beater - All original 208K miles and counting
Sold - 04 Marauder, Silver, Dark Interior, Factory Sunroof.
Z-Tune, JLT CAI, Z&M Control Arms, KYB Shocks, BC4E Dead Pedal, Pro Guard, Sparta Watts links, R1 Slotted Front Rotors, Braided SS Brake Lines, Automatic Traction Control "Turner-Offer".
4.10 FRPP gears awaiting install (on extended hold).
Senior Member
You made the load on the coils less by gapping the plugs too tight. If the coils were a problem (and they are a known problem) you threw a monkey wrench into your diagnosis attempt. You may not get a sign from God like a check engine light, DTC code identifying the cylinder, or a burn mark on the coil. Just lots and lots of Marauder owners who have cured a misfire with new coils.
Gap the plugs correctly and drive it for a while. If/when the misfire returns replace all the coils.
Lifespeed
2004 Silver Birch Marauder 130K miles
Wilwood Aero6 F, NMDP R brakes, Penske 7500DA shocks, Hypercoil 600lbs F and Grand Marquis R air springs, Addco tubular sway bars, Metco control & Watts, 31 sp axles, Stainless Works cat-back exhaust, Lidio tune, American Racing AR883 9.3" 50mm F 10" 59mm R 20" wheels, Pirelli P-Zero 265/35-20, 275/40-20 tires
Coming soon: Livernois 5.0L stroker, ADTR/Vortech V2 intercooled SC, Silverfox trans and Circle D converter
Crazy 'bout a Mercury
While merging on to the highway last night, I went WOT and experienced periodic hesitation from 40 up until about 85-90 mph. It wasn't really a stutter as much as it was like a hesitation.
If it makes any sense, it was like it accelerated smoothly, then it would plateau and hesitate for just a half second, accelerate again, then plateau and hesitate again, so on and so forth. It only hesitated about 3 times. I'm at 81k right now. Does this sound like what you were experiencing (or anyone else for that matter)? No codes thrown for me either. Original plugs and coil packs as far as I know.
2003 Black 300A
Adopted: 4/26/14
Mods:
Mo's Tune - K&N CAI - 4.10 FOMOCO gears - Reische 170* T-stat - NGK TR6 Plugs - Flowmaster 40s - MuscleMerc's 3" Fuel Filter Mod - Addco Front and Rear Sway Bars - TCE SS Brake Lines - Cooper RS3-G1 - Factory Spoiler - SS Bumper Inserts
Senior Member
Mine was a distinct shudder. Your issue sounds different.
2018 F-250 6.7L Crew Cab 4x4
2013 Dodge Charge R/T Daily Driver/Beater - All original 208K miles and counting
Sold - 04 Marauder, Silver, Dark Interior, Factory Sunroof.
Z-Tune, JLT CAI, Z&M Control Arms, KYB Shocks, BC4E Dead Pedal, Pro Guard, Sparta Watts links, R1 Slotted Front Rotors, Braided SS Brake Lines, Automatic Traction Control "Turner-Offer".
4.10 FRPP gears awaiting install (on extended hold).
Crazy 'bout a Mercury
Gotcha. Well, they sound at least similar. I read somewhere else that the shuddering can also be found when under very light load as well. Seems to happen under heavy and/or light load. I have experienced this as well. Usually right after start up as I'm pulling down my long drive slowly. Acceleration isn't smooth and seamless, has some stutters and pauses in it.
2003 Black 300A
Adopted: 4/26/14
Mods:
Mo's Tune - K&N CAI - 4.10 FOMOCO gears - Reische 170* T-stat - NGK TR6 Plugs - Flowmaster 40s - MuscleMerc's 3" Fuel Filter Mod - Addco Front and Rear Sway Bars - TCE SS Brake Lines - Cooper RS3-G1 - Factory Spoiler - SS Bumper Inserts
Senior Member
Sounds like a misfire to me.
Lifespeed
2004 Silver Birch Marauder 130K miles
Wilwood Aero6 F, NMDP R brakes, Penske 7500DA shocks, Hypercoil 600lbs F and Grand Marquis R air springs, Addco tubular sway bars, Metco control & Watts, 31 sp axles, Stainless Works cat-back exhaust, Lidio tune, American Racing AR883 9.3" 50mm F 10" 59mm R 20" wheels, Pirelli P-Zero 265/35-20, 275/40-20 tires
Coming soon: Livernois 5.0L stroker, ADTR/Vortech V2 intercooled SC, Silverfox trans and Circle D converter
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