QUICK HELP PLEASE.. LOWER IM!!

[mprtklr]

i have a upper and lower IM and new TB comming in tomorrow and i have a concern about the lower IM. for those of you who have done it, does the fuel pressure have to be relieved? if so, how do i do it most effienciently 9and cleanly) and what other situations do i have to look for while doing the lower??

thank you

Robert

[FastCougar]

pull the fuel pump fuse and turn the car over ... it should start and then die ... this is the easiest way.

[Draxas]

there is a tiny valve (looks like a tire valve) called the SHrader Valve.... twist the cap off, and depress the valve down to release the pressure...keep a rag underneat it to catch any fuel that comes out....

You are also going to need a specific tool to get the fuel lines to disconect... I ran into this problem, and couldnt get a tool to do the job.. so i had to make a little tool of my own. what i did was take a plastic cup, kinda like the kind you used to get from Taco Bell or something... and cut a strip of plastic off the cup in a rectangular shape... you need to use this strip to wedge into the retainer that has a spring loaded lock inside....once your little piece of plastic is wedged in there enough, it releases the spring and you can slide the two parts from each other. I had a Chiltons manual, and it helped ALOTTTTT GO BUY ONE NOWWWWW....it will help you.....

I know this sounds confusing, but when you look at the clamp you will understand... you need something plyable like plastic, so you can wrap it all the way around the shiny chrome fuel line, and then slide it into the retainer to prop open the spring.....


If you are also gonna take the fuel rail and injectors off your stock lower, and put them on your new SVT lower, just take your time and be gentle. without the correct fuel injector removal tool, you can damage the connectors.... just take your time and you will figure it out....

Nikolas

[mprtklr]

i did buy one, but it shows a return fuel system and assumed that is would not help me. it has helped me countless times.

also the lower (maybe this is new) comes with new 19lb injectors and a new SVT fuel rail.

[Draxas]

does your car have return or return-less fuel system? i thought all cougars built on 5/99 or later (returnless) had the larger (SVT) lower already........


Nikolas

[mprtklr]

i have a returnless system, and god i hope i dont have the svt lower already, otherwise there will be a SVT lower for sale come friday when i have time to put it on !!!! how would i know? i cant measure the size of the bores? so i dont know how i would know??


nick, was your return or returnless? if it was return how did u get a lower im on there?

[exigent]

Remember that bleeding the pressure from that valve is slightly dangerous. There are PLENTY of ignition sources under the hood of the car... not to mention that the fuems will hit the ground and roll away and find ANY souce of igntion laying around... like that kerosene heater you may have running to keep you warm in Nov.


Not to say i have not used the valve... but.. it is more dangerous then its worth.

Do as trevor said. Or... pull the kick plate on the drivers side left foot. Where the trunk and hood releases are. Now find the fuel pump cutoff switch. its a nice little button with a connector on it. Simply start the car... and pull that connector from the button/switch. The fuel pump will instantly turn off and the engine will suck up the last of the fuel pressure.

Safest way by FAR in my opinion. Just remember to plug it back in :)

[PuckPuck]

but it's much more fun to watch the fuel spray everywhere :biggrin:

[Blackcoog]

LOL

[exigent]

Yeh... it was actaully because of that puck that I changed my mind... Ive always had it just kinda trickle out... but yours... well.. it had some gusto going on. Must have been big psi for it to flow like that. I actually thought your fuel pump was on or somthing... hehehehe


Live and learn... as long as you dont explode the garage you are in because you let the vapor out.



I remember a story of a guy that lived in my area that was on the news one day. He was a avid mechanic... doing some work in the garage and had to syphon gas from a gas tank. Well.. he died because he was not thinking and the fumes hit the kerosene heater on the other side of the room and the garage exploded. Its not worth it... not at all ppl. Unless youve played with gas (heheh i have) and had a "mistake" or two... you have no idea how violent gasolene vapor can be... or how far the vapor can roll along the floor. Its nuts...

I was lighting a bonfire once... douched it with some petrol.... make a nice little trail of petrol back 10 or so feet. I no more then lit the lighter (while a good 12-13feet back) and started to go toward the the trail i made when sudenly my whole world lit up. the fumes had moved away from the brush and stuff and were lingering all around the pit. It started everything within 5 feet or so of the pile on fire.

Another story? Sure... my neighbor has some hella cool scars on his arm from him attemping to throw gas on a fire that was burning at the time. He says he had it in a cup.... and he knew he had to throw it so as to not blow up... but by the time he started to throw and the gas started to pour out... the fumes ignited and he went up. Nice huh?

REMEMBER. Its not the liquid that is the biggest problem.... that will burn but actually not that readily. The fumes will be what does you in... they are extreamly dangerous even to a good mechanic. So....

Since i saw pucks valve spray on the fuel in a nice vapor.... ill never use that method again.... its just not worth it.









not to mention we couldnt smoke in the garage for 30minutes... hehehe.

[ricecats]

fyi,
the tool Chezter is talking about is sold in Sears for $9.99, it is in the 'car tools' (lack of better phrase) area. it includes 6 different sizes. defiantly worth it

[OSUStallion]

For anyone that is worried about already having a SVT manifold and buying form BAT, you should nt worry at all. Even if you have the same exaxt manifold you are getten a brand new clean one WITH 19# injectors already installed! The injectors are worth the price of the manifold alone. And since they are already installed that makes install a million times easier!

[ricecats]

osu, yes that is great if you have a returnless system, but for those that dont we must use the same fuel rail.

[bigbudman]

How can I tell by looking if I have returnless??? I have a '99 V6 ATX. What do I need to look for.....and what does returnless mean?

[ricecats]

Big,
Pretty much just by saying you have a 99 im willing to bet its a return system
What you look for is 2 lines under the intake hose by the throttle body they will have to round quick disconnects this is a return system