Spittin Sputterin and Smokin
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Join Date: Dec 2007
Location: Ocala, Fl & Woodland, WA
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Spittin Sputterin and Smokin
This morning I had anticipated doing a major tune up on the ole nag so I'd feel comfortable driving from FL to WA in a few weeks. Well, when I cranked her over this morning she did nothing but spit, sputter and bellowed smoke (unburnt fuel) out the tailpipe. I shut her down, left her sit for a while and cranked her over again. After a few secs of the same she settled into her normal cold engine high idle. I did drive to the store and back and she seems to run fine but there's still a light fuel smell. Reminded me of using Seafoam, it was that bad.
I haven't done the tune up yet so here's what's there and when I last did it, my truck has 120k on it now.
Oil/Filter: Motorcraft 5/20 and S400 - 700 miles ago
Air filter: K&N drop in - cleaned 700 miles ago
Fuel filter: Ford parts - 5k ago
Rad fluid: can't remember brand - 5k ago
Cleaned OEM IAC even though it was pretty clean - 5k ago
Cleaned MAF - 5k ago
SeaFoamed - 5k ago
PCV: Ford parts - 10k ago
CPS & CMP: Ford parts - 17k ago
Plugs: Autolite APP104 gapped to .044 - 20k ago
Wires: Ford parts - 20k ago
I've checked for air and fuel leaks and haven't found anything but I did find a rad overflow hose leak at the overflow reservoir that was clamped and fixed. The current plugs at cyls 1, 2, 3 had carbon build up but 4, 5 & 6 were surprisingly clean. I cleaned the carbon off the plugs, checked the gap and put them back in which resulted in a slightly smoother running engine. MAF, TB and IAC still look clean.
Any ideas what could have caused this to happen?
I haven't done the tune up yet so here's what's there and when I last did it, my truck has 120k on it now.
Oil/Filter: Motorcraft 5/20 and S400 - 700 miles ago
Air filter: K&N drop in - cleaned 700 miles ago
Fuel filter: Ford parts - 5k ago
Rad fluid: can't remember brand - 5k ago
Cleaned OEM IAC even though it was pretty clean - 5k ago
Cleaned MAF - 5k ago
SeaFoamed - 5k ago
PCV: Ford parts - 10k ago
CPS & CMP: Ford parts - 17k ago
Plugs: Autolite APP104 gapped to .044 - 20k ago
Wires: Ford parts - 20k ago
I've checked for air and fuel leaks and haven't found anything but I did find a rad overflow hose leak at the overflow reservoir that was clamped and fixed. The current plugs at cyls 1, 2, 3 had carbon build up but 4, 5 & 6 were surprisingly clean. I cleaned the carbon off the plugs, checked the gap and put them back in which resulted in a slightly smoother running engine. MAF, TB and IAC still look clean.
Any ideas what could have caused this to happen?
#3
Join Date: Dec 2007
Location: Ocala, Fl & Woodland, WA
Posts: 253
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#5
#6
check you o2 sensors, i work for dodge as a driveability tech, and im not sure about ford, but on a dodge the upstream o2 sensor (before the cat) is used for fuel calculations by the pcm, if it has gone bad it will assume a lean air/fuel ratio and dump more fuel into the cyl, hence the unburnt fuel coming from exhaust, like i said not sure about fords fuel managment system but just throwing out what i know. and your right around the milage that i normally start to see problems with the o2 sensors
Last edited by slyhog; 07-02-2008 at 11:01 PM.
#7
You may need a new IAC, Prerunner-Ranger had a similar problem
https://www.ranger-forums.com/forum2...ad.php?t=67450
https://www.ranger-forums.com/forum2...ad.php?t=67450
#10
Join Date: Dec 2007
Location: Ocala, Fl & Woodland, WA
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Hay now, it ain't cool to dis another man's nag...
Anyways, I pulled DTC's today and came up w/ P0302 - Cyl# 2 misfire. Thinking it may be as simple as a bad spark plug I went ahead and did the tune up I had planned on doing yesterday but this time used Autolite AP103 plugs. ...when I say tune up I mean everything from the belt to the O2's. Since that didn't fix it, I swapped the coil pack from a buddies 03 Ranger to mine but P0302 came up under pending DTC's so that wasn't it either.
I reckon I'll be pullin the fuel injector tomorrow for a look see. I've never messed w/ fuel injectors before so if anyone has any tips feel free to speak up.
Anyways, I pulled DTC's today and came up w/ P0302 - Cyl# 2 misfire. Thinking it may be as simple as a bad spark plug I went ahead and did the tune up I had planned on doing yesterday but this time used Autolite AP103 plugs. ...when I say tune up I mean everything from the belt to the O2's. Since that didn't fix it, I swapped the coil pack from a buddies 03 Ranger to mine but P0302 came up under pending DTC's so that wasn't it either.
I reckon I'll be pullin the fuel injector tomorrow for a look see. I've never messed w/ fuel injectors before so if anyone has any tips feel free to speak up.
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