Possible Bad Injectors
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Junior Member
Joined: Sep 2016
Posts: 11
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Possible Bad Injectors
Hey whats up,
This is my first post here. I want to make sure my issue isn't smaller or bigger than I think. FIRSTLY, my truck was shaking and I smelled a sulfur like smell and got a check engine light. I scanned the codes - misfire on 3 and 4. What I have done so far is change all the plugs and plug wires. I have also changed the fuel filter. This has helped tremendously. But, now the truck starts and runs (roughly under load and normally at speed) but has a slight jolt every so often at idle. When under load / going up hills or even getting up to speed the motor bogs down and shutters. My thoughts are to change the injectors. I don't want to say that its the fuel pump but I am not ruling it out at all. Any insight on this issue would be greatly appreciated.
MAF 5.9 f/s
Load 18.4
STFT1 1.6%
Intake 37deg
Timing Adv 14.5%
Throttle 20.8 %
Boost -8.4 psi
Vacuum 17.2 in/Hs
This is my first post here. I want to make sure my issue isn't smaller or bigger than I think. FIRSTLY, my truck was shaking and I smelled a sulfur like smell and got a check engine light. I scanned the codes - misfire on 3 and 4. What I have done so far is change all the plugs and plug wires. I have also changed the fuel filter. This has helped tremendously. But, now the truck starts and runs (roughly under load and normally at speed) but has a slight jolt every so often at idle. When under load / going up hills or even getting up to speed the motor bogs down and shutters. My thoughts are to change the injectors. I don't want to say that its the fuel pump but I am not ruling it out at all. Any insight on this issue would be greatly appreciated.
MAF 5.9 f/s
Load 18.4
STFT1 1.6%
Intake 37deg
Timing Adv 14.5%
Throttle 20.8 %
Boost -8.4 psi
Vacuum 17.2 in/Hs
Thread Starter
Junior Member
Joined: Sep 2016
Posts: 11
Likes: 0
Year and miles
Hey whats up,
This is my first post here. I want to make sure my issue isn't smaller or bigger than I think. FIRSTLY, my truck was shaking and I smelled a sulfur like smell and got a check engine light. I scanned the codes - misfire on 3 and 4. What I have done so far is change all the plugs and plug wires. I have also changed the fuel filter. This has helped tremendously. But, now the truck starts and runs (roughly under load and normally at speed) but has a slight jolt every so often at idle. When under load / going up hills or even getting up to speed the motor bogs down and shutters. My thoughts are to change the injectors. I don't want to say that its the fuel pump but I am not ruling it out at all. Any insight on this issue would be greatly appreciated.
MAF 5.9 f/s
Load 18.4
STFT1 1.6%
Intake 37deg
Timing Adv 14.5%
Throttle 20.8 %
Boost -8.4 psi
Vacuum 17.2 in/Hs
This is my first post here. I want to make sure my issue isn't smaller or bigger than I think. FIRSTLY, my truck was shaking and I smelled a sulfur like smell and got a check engine light. I scanned the codes - misfire on 3 and 4. What I have done so far is change all the plugs and plug wires. I have also changed the fuel filter. This has helped tremendously. But, now the truck starts and runs (roughly under load and normally at speed) but has a slight jolt every so often at idle. When under load / going up hills or even getting up to speed the motor bogs down and shutters. My thoughts are to change the injectors. I don't want to say that its the fuel pump but I am not ruling it out at all. Any insight on this issue would be greatly appreciated.
MAF 5.9 f/s
Load 18.4
STFT1 1.6%
Intake 37deg
Timing Adv 14.5%
Throttle 20.8 %
Boost -8.4 psi
Vacuum 17.2 in/Hs
This guy does know the year and miles. I was busy and I forgot.
2001 LX 3.8L
196,000 miles
Senior Member
Joined: Jul 2010
Posts: 8,545
Likes: 2,552
From: Alaska
Thread Starter
Junior Member
Joined: Sep 2016
Posts: 11
Likes: 0
What else do you need. I honestly thought that the information originally posted was sufficient enough to get a good handle on the issue. This is a legit issue and a legit post. In all honesty I Will more than likely replace everything. Not a big deal.
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Thread Starter
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98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,539
Likes: 7,641
From: MI
If you happened to notice Post #2. You come off like that has no baring. Yet you can read a scanner. Perhaps these other guys will help, if your lucky.