|
|
|
09-23-2008, 09:13 PM
|
#1 |
|
Registered User
Join Date: May 2008
Location: Mtn. Grove Mo.
Posts: 155
|
Idle question
 I know this isnt a truck question but its on my wifes 82 z28 and if i dont get it out of the garage then i'm never gonna get to work on my truckl. the car will idle just fine as long as its in park. but as soon as you drop it in a gear it will cut out and die. i've tried switching carbs, fuel filters, everything i can think of. i've made sure its in time. its just a 350 motor with a mild cam nothing special just sounds good. when you have it in drive it sounds like the idle is to low and then it just dies. but will fire up again with no problems. right now it has a quadrajet on it but i've put a carter and an eldebrock. and another quadrajet on it and still had the same problem. a mechanic friend of mine drove it and said that it was the float in the carb but can all of them really be bad. any ideas would be great its really confusing me. thanks
__________________
DJ |
|
|
|
09-23-2008, 09:30 PM
|
#2 |
|
RIP BigDaddyDave ~7-23-09~ You will be missed~
Join Date: Aug 2007
Location: Concord NC
Posts: 1,361
|
Re: Idle question
I don't think 3 different carbs are all going to have floats that are off at the same time. Have you checked all vacuum lines for leaks? Has the idle been checked or adjusted with the car in drive? What sounds good in park,may be to low in gear. Good luck!
__________________
BigDaddyDave's Truck: http://www.flickr.com/photos/daves71chevy/ | See it in Action! |
|
|
|
|
09-23-2008, 10:41 PM
|
#3 |
|
blood type; Retumbo
Join Date: Jan 2004
Location: next to my reloading bench
Posts: 10,269
|
Re: Idle question
carb with a vac. leak will be low and rough idle.
injection (with an IAC) having a vacuum leak will have a high idle. I cant remember for sure but is the 1982 Qjet a feedback model with the MC solenoid? (ie. computer controlled timing etc.) |
|
|
|
|
09-23-2008, 11:11 PM
|
#4 |
|
what knocking sound?
 
Join Date: Feb 2005
Location: good ol North Dakota
Posts: 148
|
Re: Idle question
My 78 blazer did the same thing. It was the T fitting on the rear of the intake. I replaced the rubber hose going to the trans. and now it works perfect. Just something to check.
Kager
__________________
1968 C-10 1953 belair two-door post 1955 chevy 3600 big window 1950 studebaker starlite coupe 1968 Impala SS |
|
|
|
|
09-23-2008, 11:11 PM
|
#5 |
|
~Rest In Peace~
Join Date: May 2005
Location: CALIFORNIA NOR CAL
Posts: 9,707
|
Re: Idle question
check for vuccum leaks at the intake manifold with some propane
__________________
is it fast ? it has a lighting bolt donut? B___H please, I can remove 90% of your so called "beauty" with a kleenex |
|
|
|
|
09-24-2008, 12:24 AM
|
#6 | |
|
#16876
Join Date: Apr 2005
Location: Auburn WA
Posts: 12,266
|
Re: Idle question
Quote:
Never heard of that. How do you do it? Sounds interesting. Since propane drops do you release propane over the intake and watch to see it it sucks in?
__________________
Posted via Stationary Device '71 Custom Deluxe C-20 402. '67 Buick Special 455. '49 Plymouth Special Deluxe. "I love that old car smell"  Some people are like Slinkies... not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs. |
|
|
|
|
|
09-24-2008, 01:24 AM
|
#7 | |
|
~Rest In Peace~
Join Date: May 2005
Location: CALIFORNIA NOR CAL
Posts: 9,707
|
Re: Idle question
Quote:
get a bottle of propane and rubber hose on the tip like a welders tip just start the car and turn on the propane start checking for leaks when i idle picks up you know where your leak is at dont use brake cleaner or carb cleaner for checking leaks you spray around the dizzy it might get spark from the points and poof your on fire 
__________________
is it fast ? it has a lighting bolt donut? B___H please, I can remove 90% of your so called "beauty" with a kleenex |
|
|
|
|
|
09-23-2008, 11:37 PM
|
#8 |
|
Chevys Kick A$$
Join Date: Jan 2005
Location: Zootown, MT
Posts: 12,699
|
Re: Idle question
I am thinking a vacuum leak somewhere might be causing it.
__________________
*HOODS is what I answer too* -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold  -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit   -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER  I would rather push a Chevy then drive a ford!!
 |
|
|
|
|
09-24-2008, 01:12 AM
|
#9 |
|
Registered User
Join Date: Jan 2001
Location: skamokawa, WA, USA
Posts: 527
|
Re: Idle question
This is going to sound wierd. But I had the same problem with my 87 formula. I'd just finished painting it, then went to pull it out of the barn and everytime I put it in gear it died. Seemed to run fine in neutral though. Looked at everything couldnt find anything wrong. What it finally ended up being was the ignition pickup. Corrosion had eaten it up and it was trying to unwind.
__________________
70 C10 long fleet, 355/200 4r, 6 lug disc conversion, 3" drop 70 gmc changed to 67/8 chevy, 454 with voodoo cam, th400, all 74 running gear.. in progress |
|
|
|
|
09-24-2008, 05:13 PM
|
#10 |
|
Registered User
Join Date: Dec 2004
Location: Northern AZ
Posts: 7,271
|
Re: Idle question
Won't propane.....
POOOF too?!! For sure sounds like a vac leak, maybe the brake booster line, since you put the brake on when in D or R which would allow it to run in P but open a big leak in D or R?
|
|
|
|
|
09-24-2008, 05:35 PM
|
#11 |
|
~Rest In Peace~
Join Date: May 2005
Location: CALIFORNIA NOR CAL
Posts: 9,707
|
Re: Idle question
yeah the diaphram could be leaking in the booster itself ,check to see if the booster is working properly by
pumping the brakes up and hold them then start the car and see if the pedal drops towards the floor if it does booster is good
__________________
is it fast ? it has a lighting bolt donut? B___H please, I can remove 90% of your so called "beauty" with a kleenex |
|
|
|
 |
| Bookmarks |
|
|
Hybrid Mode
