Cold Start Misfire - Diesel Forum - TheDieselStop.com
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

 
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post #1 of 2 (permalink) Old 12-07-2010, 08:51 AM Thread Starter
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Cold Start Misfire

So I realize every winter season people have cold start issues. Well I'm slowly starting to solve mine but need your help. Last winter I couldn't even start my truck if it dipped below 30 unless it was plugged in. I just replaced my worn out starter with a brand new High Torque DB starter. Now I can at least crank over the engine on cold morning, but when I do there is VERY obvious cylinder misfires. So obvious that it rocks my truck back and forth until it smoothes itself out.

My thoughts are either glow plugs and/or GP relay. Any thoughts and suggestions? Thanks in advance

2000 F250 7.3L Lariat, Crew Cab/Short bed 4x4. AFE stage II intake. Magnaflow 3.5DP/4" SS exhaust. Isspro gauges (EGT, Boost, Trans Temp) AIH Delete with riffraff boost fitting adapter, Foil delete, Muffler Delete, CCV Mod, Performance tranny from Revmaxx, Revmaxx stage 4 triple disc low stall torque converter, Revmaxx performance valve body with custom shift kit. 6.0 tranny cooler, ported compressor housing, turbomaster wastegate controller, garret high flow outlet, Non EBPV pedestal, dieselsite boot kit, Marinco mod, Fuel Bowl mod, HPX mod, Riffraff Frx, DP F6 tuner (60 tow, 80 econo, 120 race, High idle 1200, Drive Thru) Warn Hubs, Moog Balljoints, 08 tailights, 05-07 front end conversion, 08-11 rear end conversion, Line-xed rocker panels/wheel wells/bumpers
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post #2 of 2 (permalink) Old 12-07-2010, 11:29 AM
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Quote:
Originally Posted by itorchedparis View Post
So I realize every winter season people have cold start issues. Well I'm slowly starting to solve mine but need your help. Last winter I couldn't even start my truck if it dipped below 30 unless it was plugged in. I just replaced my worn out starter with a brand new High Torque DB starter. Now I can at least crank over the engine on cold morning, but when I do there is VERY obvious cylinder misfires. So obvious that it rocks my truck back and forth until it smoothes itself out.

My thoughts are either glow plugs and/or GP relay. Any thoughts and suggestions? Thanks in advance
Think your on the right track. here's a link.
Hard/No Start? Check here first.

Early '99 F350 stamp date 02/98 4X4 SW Reg. Cab Long Bed, Auto, 4'' lift, 35"s, 4" Turbo back straight piped MBPR, Banks cold air, Stage 1 Injectors, TS Beans Tunes, Modded 17,Turbo Master Wastegate, Triple A Pillar GloShift gauges, KCM HPX line, Riffraff FPx, Black CPS,
Hutch and Harpoon Mod. AE, 208,000 miles

2008 Job 1 6.4 F350 CCLB Lariat AFE CAI, 4" downpiped straight back, H&S Mini Max
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  Diesel Forum - TheDieselStop.com > 1999-2007 Ford Super Duties > '99 & up 7.3L Power Stroke Engine and Drivetrain

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