Fuel Car running worse after gas fillup

90sickfox

Wasn't a pretty sight...and I've got big hands
SN Certified Technician
Mar 2, 2015
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Yes...its called a lean backfire. You need to stop driving it around unless you like being stranded.

When you get the new tank it's best to use non ethanol fuel if you can find it. The ethanol likes to corrode metal and goes bad quicker than straight gas. This is the reason all the newer cars run plastic fuel tanks and lines.

I wish they made a plastic tank for our cars. No one wants the liability.
 
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AnthonyA1234

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Aug 17, 2020
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Yes...its called a lean backfire. You need to stop driving it around unless you like being stranded.

When you get the new tank it's best to use non ethanol fuel if you can find it. The ethanol likes to corrode metal and goes bad quicker than straight gas. This is the reason all the newer cars run plastic fuel tanks and lines.

I wish they made a plastic tank for our cars. No one wants the liability.
Yea I’ve been holding off on driving it for that reason haha. Do you think the fuel lines need replacing too or are those ok for now?
 

AnthonyA1234

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These cars are pretty easy to work on. Lots of knowledge here to help you work through things. If you end up needing some 24s I have a set I'd let go cheap.
Thanks man I’ll definitely keep that in mind. In regards to cleaning the fuel lines could anyone show me exactly what I have to disconnect and where I blow the air through. I just wanna make sure I don’t blow air in the wrong line and make anything worse haha
 

AnthonyA1234

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Ok so I found all of the fuel lines I took pics of them just to confirm they’re the right ones. So which ones do I blow air in and do I blow it on the side that has the connecter or the side with just the tube?
 

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Dan02gt

mazing how much gas smell came from that tiny hole
10 Year Member
Mar 2, 2003
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Ok so here’s some pics of my maf, the old light blue injectors and the new injectors. That maf looks stock so I think I’m good?
You have the stock MAF electronics, but you have a C&L MAF housing. The housing has a sampling tube that can be changed out depending on what injectors you are running. You need to pull it and look at the color on the sampling tube to understand what you're dealing with. Here's the chart:

53723d1224169261-c-l-sample-tube-color-rubbed-off-c-l-calibration-tube-chart.jpg


My recomendation is to ditch the C&L and the cold air intake. Buy a ProM meter that's calibrated for the injectors you buy and pick up one of the LMR factory air box reproductions.
 
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AnthonyA1234

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Aug 17, 2020
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You have the stock MAF electronics, but you have a C&L MAF housing. The housing has a sampling tube that can be changed out depending on what injectors you are running. You need to pull it and look at the color on the sampling tube to understand what you're dealing with. Here's the chart:

53723d1224169261-c-l-sample-tube-color-rubbed-off-c-l-calibration-tube-chart.jpg


My recomendation is to ditch the C&L and the cold air intake. Buy a ProM meter that's calibrated for the injectors you buy and pick up one of the LMR factory air box reproductions.
Looks like I have the black tube which means 24lbs injectors. Great eye bro thanks alot
 

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AnthonyA1234

Active Member
Aug 17, 2020
256
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You have the stock MAF electronics, but you have a C&L MAF housing. The housing has a sampling tube that can be changed out depending on what injectors you are running. You need to pull it and look at the color on the sampling tube to understand what you're dealing with. Here's the chart:

53723d1224169261-c-l-sample-tube-color-rubbed-off-c-l-calibration-tube-chart.jpg


My recomendation is to ditch the C&L and the cold air intake. Buy a ProM meter that's calibrated for the injectors you buy and pick up one of the LMR factory air box reproductions.
Am I looking at the right thing? What is supposed to be colored
 

AnthonyA1234

Active Member
Aug 17, 2020
256
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You’re supposed to look at the little tube that the sensor element is setting in. It should have a blue paint marking on one end if it’s for 24lbs injectors. If there is no marking it’s the 19lbs tube.
Yup blue marking. Any chance it could be 30lbs since the car has a cobra intake ?
 

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