Ok my buddy bought my old 91 automatic Rx-7. He had to replace the fuel pump and a couple soft lines. He replaced the pump and the lines, put the manifold back on it and changed the fluids and filters.

Now when he goes to start it, aka. puts the key into the "ON" position the injectors start "clicking away" they click click click click like they are fireing. And the car will not start. We have verified fuel and spark but the thing keeps flooding out. When we spray starter fluid in there the car starts right up then floods itself out.

Any ideas as to why the injectors would be cycling when the car isn't started??

 

You're hearing the BAC valve, not the injectors. The injectors can't fire if the engine's not turning.

 

HMM.. the BAC wouldn't have any effect on starting would it?

Is it malfunctioning? The flood clear doesn't work it's that flooded. Plus it's an auto so I can't pull it to a start for him... This is annoying..

 

Anyone know why it would flood that bad.. Funny thing is it starts on starting fluid...

 

Maybe he crossed the soft mines somethere when re-installing the pump or when replaceing the lines. It happens!!

 

Yeah I asked him that, but he has fuel at the rail... He did install a warlbro fuel pump is there any special things that need to be done to use that?

 

By "91 automatic" I'm assuming we're talking about an N/A. If he put a Walbro on an N/A he should sell the car before he does something else wrong to it.

 

Sounds like a winning idea to me. Lines crossed.........somewhere. I mean, it starts with starter fluid, a solid clue that it's a fuel pump/line related issue.

Jump the fuel pump check connector and turn the key to ON. Listen for fuel flow to the tank. It should be easily heard.

 

I went over there a little while ago, I unhooked the fuel line at the rear of the engine bay and turned the key, there was fuel shooting out pretty good...lol..

 

I hope you caught it in a busket or something.

Anywho, the out line or the in line?

 

I unhooked it at the fuel rail... Passenger side rear of the rail..

"You got a BENZ, I got a busket, give me a dollar"

 

What's wrong with putting a Walbro on a N/A??

 

1. It will overpower the FPR.
2. The stock N/A pump can handle over 200hp (or something there-abouts).

Unless you've done some serious modding, it's completely unnecessary.

 

Yeah, it was all he had though.. The stock pump was bad, I had a walbro laying around, so in it went...

 

Actually it helps starting by adding air during cranking. Since cranking fuel amounts are fixed, not having a BAC valve would make cranking mixtures richer and flooding more likely.

If you can hear it, it must be working.

The only reaason to put a Walbro in an NA is if you have to drive the car to pick up the right pump. Obviously such a massive increase in pump capacity (with no adjustable FPR or fuel control) is going to make flooding far more likely. Even if that's not the root cause of the flooding, it will be making the problem worse.

 

Ok, I may have an external FPR he can use I will have to look around for it...

 

Or you could just buy an N/A fuel pump...

 

I've been having flooding problems and that sound too, now what's disturbing is that I didn't do anything.. I know that there's a vacuum leak somewhere near the turbo and I'm going to check it tomorrow. I was able to get it to start though, after a bit of trying and deflooding. I drove the car for about 30 miles (Had to move it and towing would've cost ~300$), after it warmed up I did get it to idle, but the clicking is still there.. I know that it can't be the fuel lines, cause it worked just fine before and I haven't touched them.

If anyone finds a solution I'd really like to know

btw. What could happen if the EGI fuse has been taken out while power on? I've got a hunch that could've happened..

 

He is my friend not my girl friend..lol I "ain't" buying him anything..lol..

THis blows.

 

I meant "you" as in the generic "you". Let's hear it for the English language...

 

LOL! WTF is a predicate nomnitive?

 

Omfg leave me alone.

Oh, and did you mean ""predicate nominative"?

 

Nearly all flooding problems are caused by low compression, leaking injectors, or both. The clicking you hear is perfectly normal, as I said above. You can hear the BAC valve pulsing when the ignition is on and the engine isn't running, and you can hear the injectors pulsing when the engine is running.

The entire EFI system would lose all power. If the engine was running it would die.

But you'll give him a FPR? My5ABaby is right, replacing the pump is a better idea. Much easier than custom-fitting a FPR. With all the NA-to-Turbo swaps going on it shouldn't be hard to pick one up.

Bad mods blow...

 

Yeah.. Trying to put a car together with 0 budget sucks.. Especially when it is a RX-7. I tried telling him if you don't have time or money you don't want to own an rx-7.. But he wouldn't listen..

 

Go here.

https://www.rx7club.com/showthread.php?t=653133

$15 N/A pump.