03 Injector Issue
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Elder User
Joined: Oct 2003
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From: Gulf Shores, AL
03 Injector Issue
My 03 injectors were replaced about 90K miles ago, I have 186K now. I am now experiencing similar issues at start up when the ambient temp is below about 75 as I did when they went bad before. I have been reading up on replacing them myself and plan on having my truck scanned at Pensacola Fuel Injection beginning of next week. It is running rough on cold start up for a few seconds then clears up. The other thing I noticed is that when I rev the engine up to 3K-3500 in park there is a noticable miss that I do not notice driving under load. This would lead me to think injectors. My question is, am I leaning the right direction with the injectors? They will sell me 04.5 injectors that are completly rebuilt for 149.00 each. I also have purchased an EGR delete that I can do at the same time while I am tearing the top end apart. I do not mind how long it will take me to do it since I have spare vehicles to drive. I have read the process and it seems well within my realm of capabilities. Thoughts, comments, and suggestions will be greatly appreciated.
Posting Guru
Joined: Apr 2008
Posts: 2,392
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From: Green Lane, Pa.
I had similar issues at around 92,000 miles and I tried what other people were doing long before I started. I use ashless 2 stroke oil at 1 oz per gallon of fuel along with Motorcraft cetane booster or Dieselkleen depending on weather. I now have 120,000 with no problems on cold start ups. It works for me.
Cargo Master
Joined: Oct 2005
Posts: 2,599
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From: Farmington NM
I know that i will be flamed, But you may want to try HSS. If it does not work he will refund your money.
Also do you have the latest flash? and are you running 5W40 syn oil?
Also do you have the latest flash? and are you running 5W40 syn oil?
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Post Fiend
Joined: Oct 2005
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From: Plano TX and Brentwood TN
I would also check wiring to the modules as well. Sometimes there can be a wiring issue that gives a symptom of a mechanical issue. One of the pitfalls of having vehicles with alot of computers on them.
I would also switch to synthetic EO if you haven't already, that helps with cold start "issues".
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Elder User
Joined: Oct 2003
Posts: 986
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From: Gulf Shores, AL
For that price, you could look into some aftermarket modified injectors that have been treated to handle a little bit rougher environment. Since you are planning on doing the EGR delete the option of modified injectors is looking better and better(you don't have to get far out there with power, you can just have them treat the injectors and seal up the blow off valve(which will get you about 15mm of fuel on that alone without changing the nozzle in any way).
I would also check wiring to the modules as well. Sometimes there can be a wiring issue that gives a symptom of a mechanical issue. One of the pitfalls of having vehicles with alot of computers on them.
I would also switch to synthetic EO if you haven't already, that helps with cold start "issues".
I would also check wiring to the modules as well. Sometimes there can be a wiring issue that gives a symptom of a mechanical issue. One of the pitfalls of having vehicles with alot of computers on them.
I would also switch to synthetic EO if you haven't already, that helps with cold start "issues".
Where can i get the injectors for this price? I have not changed to synthetic because I have some small leaks and I do not want bigger ones. It has been leaking for a while and not a major concern to me. However the concern I have is I noticed that each corner of the heads at the block to head joint is wet with what I do not know.
Post Fiend
Joined: Oct 2005
Posts: 10,626
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From: Plano TX and Brentwood TN
Casserly at Full Force Diesel can rebuild some stock injectors or up to mile Stage Is for around that price. I think the mild Stage Is are about a 100 more then what you were quoted, or atleast that's what I paid for mine. He is going to be the cheapest and his customer service is second to none from all of whom I have dealt with in my quest for a hauling monster of a truck. Also I have to help out the local boys as well.
River City Diesel and Elite Diesel can also do injectors but they are going to be a little bit more. You are going to be paying for more of the name recognition on those.
River City Diesel and Elite Diesel can also do injectors but they are going to be a little bit more. You are going to be paying for more of the name recognition on those.
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Elder User
Joined: Oct 2003
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From: Gulf Shores, AL
Ok I am starting to lean towards my SCT causing the issue. I never thought about returning it to stock and trying it. PFI called me today and said they started it up this morning and ran like a top. No indications on the computer of a bad injector. I told them to try again tomorrow and we will see where that leaves me. I thought about the tuner part when they told me that it ran fine this morning. I never thought my truck ran right with the spartan tunes. Plenty of power but it was not smooth at all. I have been toying with the idea of getting some tunes from another company so I am going to start my research. I also ordered an oil cooler that I am going to replace when I add the egr delete. Heres to hoping the tunes are causing it.
Post Fiend
Joined: Oct 2005
Posts: 10,626
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From: Plano TX and Brentwood TN
You have to remember that the tunes that are archived from Spartan for the SCT are more or less "canned tunes". They are a little bit better in the sense that they compensate for the different strategies, but they are the same as "canned" in the sense that you can't tweak them any further then the strategy.
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Elder User
Joined: Oct 2003
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From: Gulf Shores, AL
You have to remember that the tunes that are archived from Spartan for the SCT are more or less "canned tunes". They are a little bit better in the sense that they compensate for the different strategies, but they are the same as "canned" in the sense that you can't tweak them any further then the strategy.
I am using tunes he modified for my stratigy. I have also tried the archived tunes and some of them run better than my "custom" ones.
Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
Sometimes that does happen as well. As to getting tunes from a different vendor, I would actually get tunes from different vendors. Some tuners are known for getting more street power, others are known more for towing etc., just like different strategies for our trucks have been known to have better economy or better power.