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Author Topic: Hesistates when engine is cold  (Read 5926 times)

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Chavlics

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Hesistates when engine is cold
« on: December 06, 2012, 15:35:42 »

I have a weird thing with my car. When ever it is cold outside like under 45 degrees and I don't let my car warm up and just go to take off it wants to stall at first but once I feather it and get it going good it's fine. Even if the car is not warmed up yet. It's like I will get in it, pump twice and it starts right up as long as I keep my foot on the gas pedal for about 15 seconds, then it runs on its own just fine. I adjusted the fast idle cam and it works after me keeping my foot on the pedal for 15 seconds but that's it. And it doesn't sound like its idling very high for how much I have the cam set. Then as it sets for a little bit it idles higher until I tap the pedal and it comes down to the normal 750-800 rpm. I believe this is a choke thing.   

But back to when it's still cold. I put it in gear and press the gas and it wants to stall. Feather it and it operates normally. Drive to the end of my block and press the gas again and it does it again but this time it doesn't want to stall just barely hesitates a little bit before going. I think it may be a choke problem bc once the needle even barely moves off the cold mark it is fine. Any input would be great.

Oh and ps I just switched to mopar performance electronic ignition
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79dodge4ever

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Re: Hesistates when engine is cold
« Reply #1 on: December 06, 2012, 16:36:16 »

simple; any carburated car you can't get in it when its cold and take off; theres a warm up period. I let carburated engines run no less then 5 minutes before pulling it into gear

if you don't like warm up times buy a fuel injected car
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Snotzalot

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Re: Hesistates when engine is cold
« Reply #2 on: December 06, 2012, 16:42:36 »

Check to see if your choke pull off is working.

A proper choke set up on a carbureted engine  is good to go in less than a minute.
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Chavlics

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Re: Hesistates when engine is cold
« Reply #3 on: December 06, 2012, 17:28:29 »

Well jeez thats a blunt statement 79. Im not complaining just seeing if something was wrong. But yeah I thought it was just bc it was carbureted but I didn't know for sure. It's good to drive in about a minute or so.
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‘09 Dodge Charger 3.5 H.O. - - 53k miles. 91 Diablo Tune. Upgraded brakes. Blasting Bobs 10dB dual exhaust.

79dodge4ever

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Re: Hesistates when engine is cold
« Reply #4 on: December 06, 2012, 17:44:36 »

Well jeez thats a blunt statement 79. Im not complaining just seeing if something was wrong. But yeah I thought it was just bc it was carbureted but I didn't know for sure. It's good to drive in about a minute or so.

I'm sorry if I came across rude but most people never give carburated cars any patients anymore; they think as soon as it starts its ready to go
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Captain Caravelle

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Re: Hesistates when engine is cold
« Reply #5 on: December 06, 2012, 18:04:06 »

Yep, 79 is right.
I plan at least an extra five minutes for warm up.
Mine does the same thing.
They like to warm up or else they get ornery.
Just let her warm up and your golden.
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Mike

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Re: Hesistates when engine is cold
« Reply #6 on: December 06, 2012, 18:11:51 »

Check to see if your choke pull off is working.

A proper choke set up on a carbureted engine  is good to go in less than a minute.

Exactly. It probably just needs a minor adjustment somewhere.
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Chavlics

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Re: Hesistates when engine is cold
« Reply #7 on: December 06, 2012, 18:18:22 »

Its all good 79 I understand you on people not being patient with carbureted cars. And yeah, right after class today I let her warm up for about a minute or so and she was golden. Got to about in between the first and second mark on my temp gauge. No hesitation or stumbling.
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‘09 Dodge Charger 3.5 H.O. - - 53k miles. 91 Diablo Tune. Upgraded brakes. Blasting Bobs 10dB dual exhaust.

Captain Caravelle

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Re: Hesistates when engine is cold
« Reply #8 on: December 06, 2012, 18:18:54 »

Exactly. It probably just needs a minor adjustment somewhere.

All I know is mine will be fairly pissy if I try to take off after one minute.
Sure, she'll go but she won't be happy about it.
My carb is set up perfectly.
It's the engine itself that likes to be warmed up.
On a cold day, I let her warm up and she runs like a dream.
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DobaMark

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Re: Hesistates when engine is cold
« Reply #9 on: December 06, 2012, 18:57:44 »

Really?  I never needed to let my cars warm up when I drove carbureted cars.  And this was when I lived in Ohio where it got cold.  I'd start them, let them run a couple seconds then kick down off the fast idle and go.  I'd bet with some choke work the car won't be near as cold blooded.  I had great luck soaking the stock choke springs with solvent once a year or so while working the spring.
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Re: Hesistates when engine is cold
« Reply #10 on: December 06, 2012, 19:06:06 »

Okay, there's actually a lot there.


The starting- that's normal for a properly tuned car.


Now the having to let it warm up thing sounds like the choke is not functioning optimally or not working well at all. It'd be good to go ahead and check the operation closely.


2 barrels tend to have much worse choke problems. Check it carefully as it's not unlikely for it to be all kinds of rough.
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Captain Caravelle

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Re: Hesistates when engine is cold
« Reply #11 on: December 06, 2012, 19:43:33 »

Chavlics car is lb free so he's got a while different animal now.
Could be choke.
Mine still has "the brain"
She'll run cold, but way better warm.
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Chavlics

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Re: Hesistates when engine is cold
« Reply #12 on: December 06, 2012, 20:38:25 »

Really?  I never needed to let my cars warm up when I drove carbureted cars.  And this was when I lived in Ohio where it got cold.  I'd start them, let them run a couple seconds then kick down off the fast idle and go.  I'd bet with some choke work the car won't be near as cold blooded.  I had great luck soaking the stock choke springs with solvent once a year or so while working the spring.

If it kicks off the fast idle then it's warm enough to drive.
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MoparDan

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Re: Hesistates when engine is cold
« Reply #13 on: December 06, 2012, 21:43:40 »

All four of mine always needed 5 minutes or so, with Fury I have noticed a slight hesitation when I first put her in gear, though I park on a bit of an incline, where as the the other three I still lived at home and had a flat driveway (maybe I just never noticed)
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Re: Hesistates when engine is cold
« Reply #14 on: December 06, 2012, 22:08:47 »

Chavlics car is lb free so he's got a while different animal now.
Could be choke.
Mine still has "the brain"
She'll run cold, but way better warm.

The only difference that makes is both running properly the computer will give better gas mileage. They should all run better warm but still not have any problems when they are cold.
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