fuel additives, etc. (Full Version)

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fuel additives, etc.

  

Armageddes -> fuel additives, etc. (5/2/2008 8:20:20 AM)

    The good news is that with gas prices apporaching $4.00.gal, I have been getting around 22-23 mpg in mixed driving conditions.

   The bad news is that apparently driving these cars like a blind grandmother for a significant period of time makes HAL fat and lazy.  My Charger now drives like a pig, and hesitates badly on the bottom end.

   So, while I can always re-chip, a plug change, throttle calibration and overall tune up is on the agenda as well.

   My question concerns the fuel system.  Does anyone run a fuel additive/cleaner once in a while that does not mess with the sensors, etc?  Someone mentioned something called "Seafoam."  Any good?

   I am very suspicious of some of the gas stations in my area.  Because the profit margin is so small, I really question whether I am getting 93 octane or not, and if I am, where did it come from and how old is it?  Some fill-ups are fine, others I feel like the car is sluggish.  I now only buy from a few stations.

   Thanks in advance for the info.advice



  
Midnight Blue -> RE: fuel additives, etc. (5/2/2008 12:23:59 PM)

Before you buy, read the bottle and make sure that none of the contents are on the do not use list (like mmt).  I have the service manual on disk but I believe this info is also in the owner's manual.

Redbeard

MangoInTX -> RE: fuel additives, etc. (5/2/2008 12:43:19 PM)

Seafoam is good stuff.

Plan to use this prior to an oil change.

Step One:
Fill up the gas tank. Add a can to the crankcase through the oil filler; also add a can to the gas tank to clean the fuel system and injectors. After this put about 200-250 miles on her then move on to Step Two.

Step Two:
Add another can to the top end of the motor through the PCV hose.  (If your stock disconnect the PCV hose from the PCV valve or if you have a catch can disconnect the hose that leads to the intake from the catch can). Using a funnel insert it into the PCV hose and start the engine, it will have a high idle because by unplugging the PCV hose you create a vacuum leak. Slowly pour in about 3/4 of the can in small increments into the funnel. The engine may stall so it nice to have a helper to tap the throttle. Pour the last 1/4 of the can all in at once and let the engine die. If it doesn't die just turn the ignition off and let her sit for 30 minutes to an hour.

After it has sat for 30 minutes to an hour start the car. It will be hard to start and once it gets going it will idle rough which is normal. Once the idle settles back to normal take the car out and drive it like you stole it. Don't be surprised if bluish/white smoke comes from the exhaust, after a few miles this will disappear.

When you get back from your drive let it cool down and change the oil.

74scamp -> RE: fuel additives, etc. (5/5/2008 11:21:51 AM)

I agree with Mango - Seafoam is good stuff.  It's kind of an involved process to use it correctly, but it will clean valves, everything.  I used it on a 1974 Plymouth Scamp that had the /6 in it.  The engine had not been running in at least 10 years.  A rebuilt carb got it running, sort of.  Seafoam got her running really good!  As said, it's kind of an involved process, but is good stuff.

Dave

Hardcharger -> RE: fuel additives, etc. (5/5/2008 12:46:39 PM)

quote:

ORIGINAL: MangoInTX

Seafoam is good stuff.

Plan to use this prior to an oil change.

Step One:
Fill up the gas tank. Add a can to the crankcase through the oil filler; also add a can to the gas tank to clean the fuel system and injectors. After this put about 200-250 miles on her then move on to Step Two.

Step Two:
Add another can to the top end of the motor through the PCV hose.  (If your stock disconnect the PCV hose from the PCV valve or if you have a catch can disconnect the hose that leads to the intake from the catch can). Using a funnel insert it into the PCV hose and start the engine, it will have a high idle because by unplugging the PCV hose you create a vacuum leak. Slowly pour in about 3/4 of the can in small increments into the funnel. The engine may stall so it nice to have a helper to tap the throttle. Pour the last 1/4 of the can all in at once and let the engine die. If it doesn't die just turn the ignition off and let her sit for 30 minutes to an hour.

After it has sat for 30 minutes to an hour start the car. It will be hard to start and once it gets going it will idle rough which is normal. Once the idle settles back to normal take the car out and drive it like you stole it. Don't be surprised if bluish/white smoke comes from the exhaust, after a few miles this will disappear.

When you get back from your drive let it cool down and change the oil.


Mango, 

What happened to your diagram-laden explanations for us less mechanical savvy?

MangoInTX -> RE: fuel additives, etc. (5/6/2008 4:29:08 AM)

Oh man I'm slipping.   [:D]

Hardcharger -> RE: fuel additives, etc. (5/7/2008 7:12:38 AM)

quote:

ORIGINAL: MangoInTX

Oh man I'm slipping.   [:D]


If your slipping then who am I gonna get advice from?  Scamp and his smoke bomb bandits?  BTW, I miss that picture...but, I will be using the Seafoam process in the near future.  thanks for the info.

  

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