cold natured

[fryedaddy]

i fired my 433 up today for the first time in 2 weeks.i know these engines are cold natured,but when i fired it up it sounded like it was only running on half the cylinders,barely could keep it going the first minute or two,but after it got up to temp it ran great.no choke on my 850.is this normal to run that crappy till heated up?

[plovett]

How big of a cam do you have?  If it's a pretty big cam then that seems pretty normal to me. 

JMO,

paulie

[chris401]

A choke definitely helps. FEs take longer to warm up in pickups due to the big radiators. If you were in Texas you could stick a feed sack in front of your radiator without being noticed.

[chilly460]

That’s how mine starts in cold weather too, have to go full choke and a couple big pump shots then feather it at 1500rpm for two minutes, then at 1200rpm for another bit before it’ll hold a ratty idle.  Performer RPM has no crossover so it’s slow to heat up.  I have an electric fan that I keep off but it still takes some time

[Drew Pojedinec]

Radiators shouldn't matter until the thermostat opens.

My truck has the performer rpm as well with no exhaust.  Yeah, take a minute to warm up. 

[chris401]

Radiators shouldn't matter until the thermostat opens.

Wasn't a question. Think about it, you'll figure it out.

[Falcon67]

Yep, normal.  Start it up, load it against the converter a few times helps.  I run a tunnel ram with no choke, just part of the deal.  Nothing runs really well until its at full operating temp.  If I need something with start and instant drive away, I'll take the hybrid.   

[fryedaddy]

thanks for the replies.it has a .244 at .050 cam and also the rpm intake.if i take off down the road too early it misses going down the road till it heats up then it runs awesome!

[plovett]

I think you're okay.  On my 428, when it's cold, I pump the gas a few times, wait 5-10 seconds, light it off, then feather the gas for a minute or two, then hold the gas down to keep the idle around 1500 rpm for another couple of minutes, then it MAY idle on it's own.  Just depends on how cold it is outside.

I generally get the water temp up to 160-180 before I even leave the driveway, then I drive about 5 miles or so to get the oil temp up before I romp on it.

JMO,

paulie

[fryedaddy]

I think you're okay.  On my 428, when it's cold, I pump the gas a few times, wait 5-10 seconds, light it off, then feather the gas for a minute or two, then hold the gas down to keep the idle around 1500 rpm for another couple of minutes, then it MAY idle on it's own.  Just depends on how cold it is outside.

I generally get the water temp up to 160-180 before I even leave the driveway, then I drive about 5 miles or so to get the oil temp up before I romp on it.

JMO,

paulie

thanks Paulie,that sounds like a good plan warming it up that way before getting on it.good deal   Brian