Hi all not to happy with starting my 500.
Sent my B verson to Ram for the upgrade.
Now it is a C verson,Should have kept the old one.
The first day I got it back tried to start it 23 times with 3 succesful starts.
Today 6 times and 1 start.
Batteries always charged.
Glow 40.
Start gas 50
Start pulse 90
Fresh fuel.
What I am getting is Run RPM Low.
Also I don't like the blue flame coming out of the engine
Can anyone give me some help
Thanks Rcpete

Contents removed! Comments such as this will not be tolerated.

Todd Witkoff
Jets Moderator

If you don't have anything construtive to reply ,don't waste my time please.
Thanks Rcpete

RCPete,

I few things about the start up process. If the "Gas" setting is too much (your ECU version means the gas setting is too low), then you will see some flames coming out the back RIGHT after the engine starts. If you see flames coming out the back during the RAMP cycle, then the START PW is too high. If the GAS setting is allowing too much GAS to enter, you might be blowing out the flame (in the case of no start), try increasing the GAS value by 5 each time until you get consistent starts.

GeorgeR.

George,

I understand you are trying to help but please leave the answers to questons in these forums to the forum host.

Thanks,
Todd

Ooops, sorry.

GeorgeR.

Hello Pete; If you are getting blue flame on the start then chances are that you are getting too much gas. Check the start pulse width. You should notice an increase in engine rpm as soon as you see the words FUEL RAMPING. If you don't have a clue as to where you need to be for start, A good procedures to follow is this. Remove the fuel line at the engine - Lower the PRIME PULSE WIDTH to what ever you have your start pulse set at - press the prime button and check to see that you are just starting to get the fuel to flow - Play with the prime pulse instill you find the point at which your system starts to flow fuel - Use that value as your new START PULSE WIDTH - Remember to set you prime back to 150 - During the next start look at the terminal and check for a change in sound as soon as you see the display change to the words fuel ramping - If the change occurs to soon and hot then you need to lower the number - If it takes a while then you need to raise it - You want to hear a change as soon as the display reads FUEL RAMPING. Also make sure that the plug is always pulled out and not touching the combustor inside. Another good practice is to always purge the gas cylinder prior to filling. This cool down the tank and allows a better and more consistent fill. Hope this helps. If the problem continues please let me know. Good luck

As I understand, on the C version the higher the number the less you are getting,fuel,gas.
Starting my Ram 500.
Actually my problem starts well the fuel ramping.

It ramps very fast and when it almost reaches idle spead it sputters, sputters and sometimes a blue flame is present. Most of the times it then quits.

The data terminal usually reads Run RPM Low.

When the engine does run the RPM readings are fine.

I would appreciate any help.
Thanks Rcpete

Hello Pete; On the C02C version the only numbers that are reversed are the glow and the gas adjust parameters. On both of these parms the lower the number, the higher the plug voltage and the higher the gas flow. It sounds as if the START PULSE is too high. This will cause too much fuel to enter and the fuel will not atomize properly. It is good to understand what happens during the start cycle. First, the propane starts to burn. It heats up the vaporizer's tubes but never gets them as hot as they are when running. As the fuel enters the vaporizers, it exits in a liquid form due to the fact that the sticks are not as hot as they should be. The liquid does not burn as good as if it was properly vaporized therefor causing that spitting sound. If the fuel enters too fast it never allows the sticks to heat up nd the engine starts to load up. The spitting gets worse and may even quite due too being too rich. It may also shoot a good flame out. This is the reason why it is important to set the START PULSE WIDTH so that the fuel comes in just after it transitions into fuel ramping.

Thanks rambat for the help.
Have changed my settings to,
Start Pulse-75,
Start gas -70,
My Ram now starts every time and accelerates smoothly.
Thanks Rcpete

Hello Pete; glad I was able to help. I would appreciate it if you could send me info on the ambient temp you are flying in. I am trying to build a data base on the proper gas values for various conditions. This will allow us to post a table of values for all temp conditions that could help others. Hope you enjoy your engine and thanks for your business.

Rambat,
would you give me a call asap-thanks.




Jack Jet Williams
760-956-1075
Hesperia,Ca.

Hi rambat the ambient temperature today was 80 degrees F.
Thanks Rcpete

I am a little confused here. My ECU is version B01L, and my understanding is that the lower the GAS parameter, the more gas you get. For example, a setting of 20 gives more gas than, say, a setting of 50. So this is the same as the C02C version you describe above.

I also understand that in cold weather, you need more gas than in hot weather, so you would DECREASE the numerical value of the GAS parameter to get more gas for the cold weather.

Brian, The reverse number logic is for the C02C software only! With the previous software you should follow the book as far as increase or decrease in parameters. Increase equals increased parameters, ETC. Please advise your results! Wayne McCosker
P/S What is your phone number! Mine is 636-940-0901 Give me a call!

Brian; In the Bo1L version, the parameters are not reversed. A higher number increases the value and a lower number decreases it.

Well, this is interesting. The manual clearly states, on page 29, that a higher parameter gives LESS gas than a lower one. In fact it states that a parameter value of 0 will give maximum gas. In Tony's Tips, on the RAM web site, it also says that a higher parmeter value gives LESS gas. So why does my manual say this, and why does Tony say this if it is not true? No wonder I have so much trouble with my 500.

My manual is a year old, so I assume it reflects the ECUs that were provided with the engines at that time. It has just been a year since my second 500 was delivered, so I would naturally believe that the manual that came with it was correct. So, are you saying the manual is wrong?

Brian; Our ECU programmer is on vacation for a few weeks. As soon as he returns I will get all the facts from him and will post them. Thanks.