What kind of fuel line and fittings are you using.

If you have a small leak at the fitting and the clamps are tight, I am gonna go out on a limb and say you are using barbed fittings and probably put the hose on and off a few times. If this is the case, if you cut or pryed the old line off you probably nicked the barb. If this is the case they won't seal and your gonna need to replace it.

If you are using barbed fittings with high pressure fuel line, you also don't need clamps, they do more harm then good in most cases. The fittings are designed to not be used with clamps. I did this same thing on a few fittings before the guy at the local race shop saw what I was doing and told me not to use them on the rest of em. Sure enough some of the clamped fittings weep fuel but none of the un-clamped ones have any sort of leak.

 

it is just a hose clamp that u tighten with a screw driver or 8mm wrench...i got under there and cranked the crap out of it untill it wouldnt move anymore and we will see if it still leaks tomarrow...i dont know if these are the same things u are talking about or not..

thanks

 

Technically speaking the fittings I am talking about are called pushlock fittings. If your using actual fuel fittings they are either the push lock type or the slip in type that are used for the Braided stainless steel hoses. It is common to use the brass hydraulic type fittings though and they are barbed and do need clamps.
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Of these three types, only the slip on below needs clamps.

 

yup..thats them!