Resolved Plymouth Colt Vista N/A 4g63 SOHC engine problem

[csdwarf11]

Hey guys, me and a few buddys decided to take my moms old Plymouth Colt Vista 4wd and cut it apart built a tube frame around the drive train and have some fun with it.

When I was younger I learned to drive manual in this car, and it always ran great, we pulled it out of the wood work and decided to fire it up, we were having no luck getting it going, we have SPARK, and when priming the engine through the intake it runs great till it uses up all the gas.

I pulled the fuel rail and everything seemed to be fairly clean, injectors look fine, but I'm not sure how to tell.

There is also a fuel pressure regulator on the fuel rail, there is a what appears to be a vacuum line and a intake fuel line hooked to it. We are not getting any fuel by this pressure regulator, I hooked it up with it unbolted, primed the engine through the intake and ran it, no fuel was coming through the fuel regulator.

Could this be my problem? What else could it be? Any tests I should perform to figure out what my fuel delivery problem is?

Thanks a lot guys! I'm excited to learn about these engines, a lot different coming from the diesel world.

 

[96' Eclipse GS]

If you are not getting fuel to the fuel pressure regulator, then maybe it is farther back. Have you tried seeing if there is any fuel before that, check the fuel pump? Never hurts to double check and ensure yourself that you are covering all the bases of the fuel system...

 

[92tsiawdguy]

Check the fuel pump and fuel pump relay.

 

[csdwarf11]

Oh, I forgot to mention.

The car is off the road due to rust, I used to drive it around and then the fuel lines rusted out, so then we parked it.

At the moment we have it rigged up so an outboard tank with a bulb is pumping gas directly to the regulator.

I didn't think about this before, but is the fuel pump a high pressure fuel pump? do I need to rig the fuel pump back up?

(I have fuel at the regulator, but its only a few PSI, whatever I can pump with an outboard tank bulb)

Thanks again guys!

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She's an animals, like i said I drove it a few years back. We have a few hours into taking it apart, going well, trying to get it down to some kind of subframe, then weld in some support make a cage, have some fun with a 4x4 little buggy.

Is there only 1 fuel pump in the tank? Because I thought I had this thing running of an outboard tank a while back, maybe not.

-How much power do these little 2.0 SOHC N/A engines make? The 4g63 block is common isn't it? Does this engine have any hope of making power? My dad rebuild the engine right before it wouldn't pass inspection due to to rust, ~15K on engine, new crank bearings, ect.

Thanks guys

 

[DSM1G90]

4G63 SOHC did close to 120hp at 4500 rpm.
It's the big brother to the smaller 4G37 SOHC, 1.8L

The DOHC version was a blessing to give the motor more HP and was to allow it to breathe better.

 

[csdwarf11]

120hp, thats not bad...we are planning to have this thing light, at this point 2 guys can lift a lot of the car haha.

still making progress! everthing is about out now, going to pull the roof off today, get the floor boards out of the way, cut the rockers out and weld in some heavy duty supports to keep everything together.

Ill post some pictures in a day or so.

but, still have to figure out if I need to have fuel pressure at the fuel rail(injector rail, right at the fuel pressure regulator) , i think that's what my problem was.

thanks guys!

I pulled the fuel pump and started rigging up my own fuel pump mount and setup, then it dawned on me.....does this fuel pump need to be under fuel to keep it cool or something?

or will I be all set running it out in the open? ALSO another quick question, the fuel pump that came out of the tank apears to be the only fuel pump on the car ( didn't notice another one under it) is this the fuel pump that creates the 40psi of fuel pressure?

thanks a ton guys, all the help is greatly appreciated!

 

[Beechnut]

So ## running this with a gas can off of a boat? Lo niceeee fuel pump in the can?

 

[csdwarf11]

We haven't figured it out yet, we had it hooked up to just the fuel line off a boat, NO fuel pump, but it wouldn't stay running, we would prime it and it would die of fuel starvation.

So I'm assuming that I need to have fuel pressure from the fuel pump, correct?

I will soon be rigging up a fuel pump in an outboard tank and be running it off that.

 

[92tsiawdguy]

So I'm assuming that I need to have fuel pressure from the fuel pump, correct?

It needs a fuel pump! It's a high pressure fuel system.

 

[mitsubishikid]

I own one of these mini minivans it is my dd.
I did a 2.4 g4cs/4g64 swap with a balance shaft eliminator kit still SOHC but with noticeable torque gains.

If you have fuel injectors then the fuel system is a high flow fuel system.

Take the fuel pressure regulator off and see if fuel pours out of the rail if so then you need a new FPR.

Check all the lines and make sure no obstructions otherwise maybe a clogged fuel filter just buy a new one and install it. They are not too expensive.

Post up some pictures if you have the time.
I already am planing to do the 4g63t swap on my Vista some time in the future or maybe I will find another one and 4g63t that one since I love the 30mpg I get.