HS00XJ

where do I clamped of the rubber gas line so I can check for leaking injector I hooked up allthe fuel pressure test and in 30 minutes it drop down from at idle 49 to 0

HS00XJ

the one with the yellow tag runs to the front of the jeep the other one runs to a black box on the driver side right in front of the rear axle do I clamped one of these coming from the gas tank

Radi

Those are plastic lines, I wouldn't clamp any of them- they'll crack and break.
Pull the rail, injectors and all, lay them on a sheet of paper towel and look for the wet one.

HS00XJ

thanks thats what i ways afraid of.i assume leave the fuel line connected so ill see if any are leaking?should i prime them while they are outby turning the keys ocer?

Programbo

I would run the Jeep just long enough to make sure the pressure is full. Not even 30 seconds. Shut it off! (Don't do this with the Jeep running!!!) Then immediately disconnect the fuel rail leaving the fuel line(s) and all injectors and clips attached. If one is leaking you'll see it right away from all the pressure still built up behind it. One of the sure signs of an injector continuing to leak is you need to crank it awhile before it starts

HS00XJ

thanks ill do this

HS00XJ

i had the fuel pump replaced a year ago because of slow starts.and it did not fix the problem it was worse in the hot weather.i called the machanic back about 3 months later to see what brand they used.of course airtech (i think thats what it was called) the one everybody saus is crap.but i just thought it was a heat soak problem.ive tried everything .hood vents wrapping the injectors and rail with exhaust tape efan timer all with little luck.if its not the injectors im wondering if my precats are clogged keeping heat in the engine bay evaporating the gas.but the pressure wouldnt leak down like that if it was that.probably need Bosch fuel pump or injectors well see.

jretzky

How do you pull the fuel injectors...can't remember?
Do you have to pull the rail and all? Posts here might help everyone.
Got one leaking and was told eariler that I should replace the injectors with an up-grade one, but this is all I have...
Neon 703 or 784.
Tried to find other posts, but no luck.
Thanks!~John

MichiganCherokee

Yes undo fuel cap, relieve pressure on rail disconnect rail, pull rail out.

HS00XJ

Update.installed 784s and it cured my slow starts.i had three leaking injectors.

CCKen

?

Have you tried this yourself?

HS00XJ

for the record I didn't try that. my injectors and fuel rail were wrapped with header wrap and I saw the gas soaked in the adhesive on the wrap

jretzky

What's the difference between the 784s and the stock fuel injectors?
Who makes them and about how much do they cost?
I bought a fuel injector rebuild kit and some cleaner, but never used it because mine quit leaking on it's own and this was right after I had pulled all the injectors to replace a broken exhaust manifold.
Thanks!~John

HS00XJ

784s have 4 pin holes factory has 1 pin hole = better optimization faster start,little better throttle response and idle.

HS00XJ

if you have an 89 model you need 703s.i think 99-01 use 784 bosch and all others use 703 unless you use an adaptor Google 703 injector upgrade theres a ton of stuff on it