Please help!

[greenisfergo]

I have a 1992 RT/TT with 550 Injectors and 500 Turbos. I let is sit for over 3 years without starting it. It would not start when I finally took interest in it. Changed fuel filter, clutch switch, battery, starter and all three coils. Got it started and drove it short distance 3 times. It did want to misfire all three times perhaps due to not setting fuel/air mixture right. Parked it for 2 days and it would turn over but not start. Any suggestions would be more that grateful. Thank You! I also would like recommendations on type of fuel pump for this car should I feel I need to replace that. It has a stock on now.

[stealthee]

First thing you need to do is diagnosis to see what's missing from what it needs to start. You need Fuel, spark, compression, and proper timing (both ignition and can timing) From there you can track down a culprit.

[greenisfergo]

First thing you need to do is diagnosis to see what's missing from what it needs to start. You need Fuel, spark, compression, and proper timing (both ignition and can timing) From there you can track down a culprit.

A friend of mine checked it out (he is not a mechanic) and said he could not get spark. Can't check compression since it won't start. My Son and I did all we could. I wish I had more mechanical ability but sad I don't.

[B-Man]

Don't need it to start to check compression.

https://www.3swiki.org/Engine:_Compression_Test

If you can't get spark on any cylinder, it's probably a bad ECU. Fairly common on 1Gs for the capacitors to leak and cause ECU to stop functioning correctly.

https://www.3swiki.org/ECU:_Replace_Capacitors_(1991-1993)

[greenisfergo]

Don't need it to start to check compression.

https://www.3swiki.org/Engine:_Compression_Test

If you can't get spark on any cylinder, it's probably a bad ECU. Fairly common on 1Gs for the capacitors to leak and cause ECU to stop functioning correctly.

https://www.3swiki.org/ECU:_Replace_Capacitors_(1991-1993)

I was wondering if it was the ECU. Do you know of ECU rebuilders?

[greenisfergo]

It crossed my mind that perhaps the ECU has a problem. Can you recommend a place to have it rebuilt?

[2fnloud]

If you have the budget, I would get a flash ECU from, 3SX. They are retrofitted 99 ECU's so you have an ECU with newer components. And once you have the car running solid with the OEM tune, you can tweak the tune some to squeeze out some extra ponies.

[greenisfergo]

I was thinking of just having it rebuilt but will consider what you recommend. Being non-mechanical I have no idea how to tweak the tune to get more HP. When it was running it had 500 HP to the ground. 0-60 in 4.3 seconds. I deeply regret letting it sit for over 3 years without even starting or driving it. Oh, where is 3SX. Name does not ring a bell. I did email Matt with Dynamic Racing for some advice but I know he is always really busy and probably does not like someone trying to pick his brain.

[2fnloud]

http://www.3sx.com

[RealMcCoy]

What are you using now to compensate for the 550 injectors? And is it functioning? if not you could have fouled the plugs and/or washed down the cylinders...

[greenisfergo]

I have an ARC2 by Split Second to adjust fuel/Air if that is what you are referring to. The car is now at a mechanics who told me one of his guys could not get spark to the plugs but he has not put much time into diagnosing the problem. I am suspecting that it might be the ECU has gone bad. I did get it to turn over and drove it on 3 short trips although it did want to misfire in lower gears. There are not that many around here who can work on a modified Stealth sad to say.

[jbuhrman]

With it being a 92 and how many issues I had with ecu in my 91 I would honestly learn towards that. As far as who to rebuild there isn't really a one stop shop everywhere for these cars. Where are you located that can assist in finding the closest supplier for you.

3SX is in North Carolina, and for fuel pump honestly if you aren't trying anything crazy just a walbruh will do.

Sent from my Pixel using Tapatalk

[greenisfergo]

I am in Fayetteville, AR. In this area mechanics who have experience with a modified Stealth is very limited sad to say. The mechanic where the car is now had it twice 5-6 years ago and he had it one time for 3 months and just found loose ground wires but got it back on the road running fine. He now has had it for several months as he has closed his shop and is fixing the cars left there and has not really gotten to mine yet. My intention is to pass all the advice I have gotten to him. I think my fuel pump is a stock one and some have said that is not good for 550 injectors. I would like to change it out for one that is suitable.

[jbuhrman]

I am in Fayetteville, AR. In this area mechanics who have experience with a modified Stealth is very limited sad to say. The mechanic where the car is now had it twice 5-6 years ago and he had it one time for 3 months and just found loose ground wires but got it back on the road running fine. He now has had it for several months as he has closed his shop and is fixing the cars left there and has not really gotten to mine yet. My intention is to pass all the advice I have gotten to him. I think my fuel pump is a stock one and some have said that is not good for 550 injectors. I would like to change it out for one that is suitable.Finding people to do the work is hard, honestly reading up hitting the how to section is going to pay off in the end. Starting small and going more and more stuff.
A simple drop in walbro 255 will fit the bill, they are not very expensive. For where to buy it is up to you as you have:
Ninja performance in South Carolina
3sx in North Carolina
STM still makes things in NY
Just decide what works best each place has advantage and disadvantage now(ninja will be possibly cheapest but longer wait time).


Sent from my Pixel using Tapatalk

[futurevr4man]

I have a fuel pump I can send you for $100. Aeromotive Stealth 340LPH (quieter than a Walbro 255, flows more, fits the same... win/win/win)

[greenisfergo]

So you think the Walbro 255 is suitable for 550 injectors? My fuel pump may be working but if we can get it started I wanted to make certain I had the right pump for those injectors. I had looked at a Denso pump. Something tells me my problem is the ECU and it was recommended I get a flashable one that 3X has for $750.00. I have no idea what a flashable one even means. I did email 3X for knowledge but they have not responded. I really would like to get the Stealth back to the way it was when I first bought it about 8 years or so ago. I will be pouring money into it that I will never get back as I have to fix the cracked dash (going to use contact cement and put black leather over the cracks after repairing them) and I need some work on door panels and get a new paint job. I had it painted about 5-6 years ago and a year later the clear coat began to peel off. Sometimes I wish I were not going through my 3rd childhood. LOL

[jbuhrman]

Yes a walbro or the pump listed above will be fine for 550cc injectors.

Ask yourself in this order of budget. Do you have the budget for the flash ecu? If not get your current rebuilt and start saving either for back up or flashecu. You don't "need" one but it makes things easier.

Sent from my Pixel using Tapatalk

[stealthee]

Just to tout the benefits of a flash ECU I'll tell you about my cousin's car. Now it's not a 3s but a DSM and the ECU he used isn't "stock" but it could be flashed with a stock tune if need be. Any way on a stock turbo his car made 260 whp and 275 wtq with nothing more than injectors and fuel pump upgrades. On stock tune and boost that car would probably be lucky to dyno 140 whp. The tunabilty makes the flash ECU a great option.

[greenisfergo]

My budget would allow me to buy the flash ECU. Need to find out first if my problem is in the ECU. If the mechanic helper was correct in that there is no fire to the plugs it could very well be the ECU.I have 500 Turbos.

[Trevor425]

I agree with the real McCoy, I'd say you prolly fouled the plugs, especially in cold weather with stale old gas and an ArcII. Simple test is to replace the front three and see if it fires, it will still misfire on back bank but should start. Could also have rust in fuel tank..

[Alex3000gt]

Is it running?