Staring issue

[Bandit]

What does it mean when you have to give it 1/4 to 1/2 throttle for the truck to start after it is warmed up?

My guess it would be rich on the low side?

 

[beason]

metal carb? the carb can get hot along with the mill and it will evaporate the fuel off before it ever gets the the mill. a little of this is normal, but if its bad i would say your lean.

 

[Metalhead Matt]

Yep. That should fix your "staring" problem.

 

[Crunkvilletx]

Are your temps good?

 

[Bandit]

Sorry...I'm a dumba$$
I meant that it is lean and need to rich....and I did rich it up and it would not idle. I'm thinking I have just got it all out of wack. Because it wont shift to second gear either. The last time i ran it when it was good, the temp was 60 degrees and was trying to tune it yesterday at 35 degrees. So I probably just need to go to base settings and start over.

 

[beason]

35 is a bit cold, you may need to put a sock on the head to get the temps up

 

[Metalhead Matt]

My 2.5 Maxx runs like junk when it's below 40. It runs like a raped ape when it's sixty. Nitros don't like the cold.

 

[BradZ]

Some engines just need some extra fuel to start, mine does.

 

[Skwerly]

My 2.5 Maxx runs like junk when it's below 40. It runs like a raped ape when it's sixty. Nitros don't like the cold.

LOL classic! Never heard it put just like that hehe.

 

[cheeseball01]

My 2.5 Maxx runs like junk when it's below 40. It runs like a raped ape when it's sixty. Nitros don't like the cold.

On the contrary. Any air breathing engine loves cold. Cold air is more dense, thus more airflow. You just have to fatten your mixture to match the dense air and your engine will LOVE it.

 

[beason]

On the contrary. Any air breathing engine loves cold. Cold air is more dense, thus more airflow. You just have to fatten your mixture to match the dense air and your engine will LOVE it.

agreed to an extent, nitro engines HAVE to get up to temp in order to run right. If it is just to cold they will never reach operating temp. he may need to wrap his head in order to get the mill up to temp.

 

[Bandit]

I will try it

 

[cheeseball01]

agreed to an extent, nitro engines HAVE to get up to temp in order to run right. If it is just to cold they will never reach operating temp. he may need to wrap his head in order to get the mill up to temp.

Agreed. My point was that cold air is good air when it comes to internal combustion.

 

[94stanggt]

Ya colder air is better for a car engine because its more dense and the computer can sense this and adjust everything to get the engine to put out more power with the higher amount of oxygen in the cylinder.
now what they need is a nitro engine that can sense the air temp and density and change its own settings. however that would take quite a lot of work, room, and weight, and $ to get it to work. and its just another thing to break

 

[cptvkirk]

Ya colder air is better for a car engine because its more dense and the computer can sense this and adjust everything to get the engine to put out more power with the higher amount of oxygen in the cylinder.
now what they need is a nitro engine that can sense the air temp and density and change its own settings. however that would take quite a lot of work, room, and weight, and $ to get it to work. and its just another thing to break

In otherwords...replace your steering wheel and brake with large servos and linkage......and find a bigger place to play

on a serious note. start at the bench. pull off your filter. ensure that what you think is full throttle is in fact full throttle on the carb.

once back on the ground running, if you find you are still not getting up to speed...determine what it is doing. Is it wanting to scream then stopping then wanting to scream or does it sound labored like your towing a brick behind you. If it's screaming and quitting, you are too lean. If it's sounding labored, chances are you are too rich. Make adjustments accordingly then run it again. The closer you get to right, the smaller adjustment will be. No more than 1/4 turn per run for HSN and no more than 1/8 turn lsn.

 

[john28]

when i started my car it goes backwards not forward its brand new and guy in shop put engine together for me may he have done somthing wrong any help please?

 

[beason]

john28, you will get a lot better response if you create your own thread about your issue. and we will need more info. like what rig it is etc.