Dropping the tank!

[KcMstang]

I planning to drop the tank on my mustang this weekend, I still have a random miss in the car and I believe my fuel pump might be the problem. I also have to throw in a new fuel-sending unit because I'm tired of guessing how much gas is in the car! Are there any speciality tools needs to drop the tank? I have never done this before but do have minor mechanical know how, probably have a buddy help me that is more knowledgeable. Are the fuel pumps on 4 cyl stangs and 5.0s the same???

:SNSign:

 

[bullitstang1313]

Not really any special tools required. You'll probably want some brass punches to help remove the retaining rings. They don't spark when you hit them with a hammer so less chance of a bang. The fuel pumps are the same for the 4 cylinder and the 5.0. How much fuel is in the tank? The less fuel the easier the job.

 

[KcMstang]

Shouldn't be much fuel in there because I drove it around a lot yesterday. Hoping to find the strainer clogged or something so I can get rid of that random miss. Done everything I can think of under the hood for spark and air now I'm looking into fuel! Either the strainer is clogged or the pump isn't working as good as it should. Wish I had a fuel pressure guage to watch while driving but that would make everything too easy!

 

[rickd93_lx]

no special tools what you do need to do is be very carefull when rmoving the unit, make sure every thing is clean as you do not want dirt falling in the tank and contaminatining it.

 

[ozanracing]

It's Easy. Just get the tires 4-6" off the ground.
Unhook the vacuume purge tank line. Remove the sender/fuelpup to connector plug,
Support the tank on wood, with a jack. Remomove the filler nect screws (4, 3 up top and 1 near the tank).

Drop the tank by removing the 2, 13mm (I think) bolts and lowering the tank straps. Lower the tank with the jack and pull the tank off.

 

[JChalfan]

Do everything that ozanracing said. After you unbolt the fuel filler neck, you can pull it most of the way out of the tank. Then you lower the tank down a little bit so you can wiggle it around some, and you can get the neck the rest of the way out. That's my experience anyhow. It's really pretty easy.

If you have an air compressor with a blower nozzle, before you remove the pump, blow all the dirt away from that whole area. If you don't have a compressor, come up with another way to clean the dirt away from the pump. Like rickd said, you really don't want dirt falling in the tank if you can help it.

Good luck, it'll be easy.

 

[BlooDReigN]

Very simple job. I removed mine yesterday in under 15 minutes.

 

[speedytang]

Does the miss happen at idle-half throttle-wot. I don't see your fuel pump causing this to happen. Have you converted to MAS.

 

[KcMstang]

My car has been switched to Mass Air. I have already checked and found the 24# injectors do match the MAF calibrated for it. Learned that by throwing in 19# injectors and stock MAF and the car ran the same. Got new spark plugs, cap, rotor, coil, fuel filter, TPS, blew out the fuel lines, checked timing, vac. leaks, fuel pressure,and still have the miss. Car doesn't miss all the time usually. I can drive along around 2k in 3rd and give it gas and it will start missing. Would NOT having a EGR vac. solonoid cause this? When I got the car the previous owner did not put one on because the solonoid is different from 4 cyl to V8 cars and this car was originally a 4 cyl. Could crappy battery cables cause a miss? Car has the cheap Advance Auto cables and I was thinking about upgrading to a more secure cable.

 

[gtxracing]

When you drop the tank, go ahead and order you an RCI fuel tank so you can get rid of that baffled POS... Not calling no one's ride or tank a POS.. Mine was LOL I'm going to be drilling my holes tonight to mount my new tank in the trunk and put my protection around it.