After changing a fuel filter today, I cranked the truck and had it at idle making sure everything was ok. I have had the #4 line break before, so I looked at the fuel lines to make sure all the isolators were tight and in place. As I touched each fuel line I noticed something. The #1 and the #4 line have a pulse when you touch them that the other lines dont seem to have.

Is this normal? A sign of bad things to come? Edited for content Nothing to worry about? End of times?




Please do not use symbols for profanity. Thanks madhat

 

Yes, it is normal and nothing to worry about.

 

With the pulse, I can see why #4 would be prone to having the isolator become loose.

 

#1 yes, #4 no. Need to re-tighten the clamp as soon as possible.

 

If you replace the #4 fuel line I would also retighten bolt and use loctite on it. I replaced the#4 line and it came loose again and the line cracked. Mopar claim the line but just a heads up that they will loosen up again in short period of time.