Too much fuel pressure?

[prplcar]

I recently put 3/8 fuel lines in my car, pick up to carb. I still have the O.E. fuel pump with smaller inlet/outlets. I am wondering if the difference in line diameter is causing a pressure increase, I get excessive fuel smell in the car now after acceleration and raw fuel out pipes at idle. I did not have these issues before.

 

[Cranky]

You have a leak somewhere. A larger line will not increase PSI but does increase flow......but do you actually have gas coming out of the exhaust pipes??

 

[prplcar]

Not pouring out, but ground gets wet if I leave it running parked. Not sure if it's flammable but it sure smells like gas. It used to do this for first min or 2 from cold start, now it's all the time. No gas in oil and compression is good across all cylinders.

 

[Hemi Rebel]

If you actually had raw gas coming out the pipes the car wouldn't even run. Rich is rich but spark plugs submerged in gasoline wont fire at all. Its condensation.

 

[MT_Mopar]

Combustion is a sequence of exothermic(heat releasing) chemical reactions between a fuel, most likely a hydrocarbon, and an oxidant, which will always be oxygen.

Water, more specifically water vapor, is formed in a combustion reaction because the reactants (initial compounds/elements) chemically change when energy is added to the equation to form the products of water vapor and often carbon dioxide.

For example:


2H2 + O2 → 2H2O(g) + heat

In the above combustion reaction, hydrogen and oxygen reaction with each other to form water vapor, and in the process release heat. The above reaction is an example of the process used to propel rockets.

Or:


CH4 + 2O2 → CO2 + 2H2O + heat

Again, in this reaction both reacting compounds have the necessary elements to form water vapor as a product. This is the case in every combustion reaction.

http://www.answers.com/Q/How_is_water_a_product_of_combustion

 

[prplcar]

I have had the car 7 years, it never did this before. Now I have a modified motor, big fuel lines, and headers causing tail pipe drip? Okay I'll go with that, there is a lot more heat under the hood now and 12ft of pipe to cool it down on the way out. Thanks.