Starting Problem on my 93 RT/10

[ViperRed]

Ever since replacing my Idle Control Valve, my car turns for ages before starting. It does sound like a fuel delivery issue and only happens when engine is cold.

I was told to check for fuel pump leak-down... To do that, I turn the key to the run position for a few seconds BUT, do not start it, then key off and immediately back on for a few more seconds, then off, THEN try to start it.

The engine turns less, but nevertheless, it still takes time to fire up. Video here

https://www.youtube.com/watch?v=vtFw4LYujkQ

And then yesterday this happened

https://www.youtube.com/watch?v=r6GdG03r6x0

Seems like I found the culprit, what are your thoughts and what should I look out for after installing new O Rings? Thanks in advance.

https://www.youtube.com/watch?v=2fw8gz6qlLY

 

[DaJerseyViper]

Yep, leaky injectors would do it.. They will **** in air as well as leak fuel.

 

[Dave1968]

Definitely fix the o-rings, but I doubt that's the problem. There's not enough fuel leaking to starve the engine. If your engine wasn't getting fuel or a lack of it, the idle should be always low and rough. Your idle is all over the place. Is it new enough that a scan tool can be plugged in? I'd bet something in the idle control circuit along with a sensor are to blame. Are the throttle bodies dirty behind the choke plates? Any bad vaccum lines? loose, cracked or dried out. Check for spark when cold - just in case.

 

[DaJerseyViper]

But the bad injector O rings could be sucking in air to the manifold, throwing the AF mixture off and not allowing it to build the proper fuel pressure to start and run. I would fix the injectors then go from there, look for vacuum leaks in the manifold, check all the connectors you moved when doing the IAC sensor, and check that the TB;s are adjusted correctly, you could have moved the adjustment slightly.

 

[ViperRed]

OK guys much appreciated, thanks.
I'll report back soon.

 

[whatthe]

Had the same problem (long cranking before engine would start. Look up primer timer extender on forum. Also check to see if you have an intake manifold leak I did and it played havoc with the cars idle.

 

[whatthe]

Did this on my 1994 solved long cranking problem


http://forums.viperclub.org/threads...nd-cure-your-Viper-Fuel-Pump-Starting-Problem

 

[Dan Cragin]

Its the fuel regulator at the pump. Call me if you need. Dan Cragin 310-597-6295

 

[ViperRed]

Did this on my 1994 solved long cranking problem

http://forums.viperclub.org/threads...nd-cure-your-Viper-Fuel-Pump-Starting-Problem

I don't have permission to access that page for some reason. Thanks.

Its the fuel regulator at the pump. Call me if you need. Dan Cragin 310-597-6295

Thanks Dan, but I'm so far away.. the time difference is too much.

 

[whatthe]

hey ViperRed will send you a private message

 

[ViperRed]

hey ViperRed will send you a private message

Got it sir!

 

[ViperRed]

Awaiting the tool so I can take those stuck injectors off!
Are the O Rings specific to the Gen1? Or can I get them off the dodge dealer for other models?

 

[whatthe]

looked around ended up going to the Dodge dealer around 80 dollars

 

[GotAViper]

I have the same problem in my 93. Takes forever to start. I wasnt clear reading above, is the problem the fuel regulator at the pump for just the long start? Where can one puchase this? is it an easy fix?

 

[Dan Cragin]

You can replace the fuel regulator or a add a fuel pump primer timer as a stop gap.

 

[GotAViper]

Where can I purchase a fuel regulator? and how to replace? thanks!

 

[Darth Menace]

Where can I purchase a fuel regulator? and how to replace? thanks!

sounds vague, but you can get them anywhere. Make sure it is a regulator for a fuel injected car and not carbed . I can't advise on how to install one on a fuel injected car though as I have only done a carbed one

 

[Dan Cragin]

The regulators are hard to find, but they are still available at around $400 (crazy expensive), The regulator contains the check valve that keeps the fuel from draining back into the tank when you shut the engine off. Thats why you have a long crank time as the fuel needs to prime the line again every time you crank. The regulator is located in the top of the fuel pump. Some folks install a fuel pump primer timer that allows the fuel pump to run for a predetermined time when the key is turned on. With this you just turn the key on, wait a few seconds, then crank the engine over. The timer is called a ERL 960 and can be bought online or at an electrical store. I think they run about $70.

Hope this helps.

 

[AZTVR]

Some folks install a fuel pump primer timer that allows the fuel pump to run for a predetermined time when the key is turned on. With this you just turn the key on, wait a few seconds, then crank the engine over. The timer is called a ERL 960 and can be bought online or at an electrical store. I think they run about $70.

Just adding a link for reference (should be ELK-960) : http://forums.viperclub.org/threads...nd-cure-your-Viper-Fuel-Pump-Starting-Problem by Tom, F&L GoR

 

[GotAViper]

That fuel pump primer timer seems like a ton of work. The long cranking time is annoying but after 8 to 10 seconds it does eventually start. I was hoping it was a cheap easy fix. $400 for a regulator seems quite high, where can you purchase those?

 

[Dan Cragin]

The primer timer is easy to do, once you do it. Yes those regulators are very expensive. Obsolete fuel system parts sells them.

 

[ViperRed]

Oh well, kind a slow but then again, I don't drive the car much anyways.
Managed to get the injectors off, and could only find 4, need another 6.. wil order online. 3 are leaking so I'll change out those 3 plus one more.

BTW, injector o-rings from a Nissan Sylvia SR20 are identical! Just so you guys know. Same part!

You must be registered for see images

 

[ViperRed]

3 O-Rings replaced, waiting on the other 7 to be picked up.
I'll take another video later today and see if the car starts consistenly okay now. It was fine last night but I won't hold my breath too long.

http://youtu.be/UkOmd2CA_5Q