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#1 |
Registered User
Join Date: Feb 2003
Location: Northern Germany,near Bremen
Posts: 684
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Hey folks,
today i talked to an "expert" about the fact that my truck is hard to start when the engine is hot. He said that i should change the open airfilter at first to a closed one that wont suck the warm air in the enginecompartement and then take a carbspacer that won´t take the heat from the motor to the carb because that causes hot bubbles in the fuel and makes it start hard! Should i get such an ugly airfilter from an original engine? What do all the other people with open airfilters do? Is there a carbspacer of any other material than aluminum or steel? Many questions! Maybe somebody can help?! ![]() Volker
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My little US vehicle parts business: http://www.thegearheaddepot.com/ Come have a look! ![]() ´81 GMC C 10, Spanish Red |
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#2 |
1962 C-10
Join Date: Apr 2005
Location: Las Vegas, New Mexico
Posts: 4,978
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Re: hard to start when hot!
I know Edelbrock makes a spacer that's out of some sort of plastic.
http://www.summitracing.com/parts/EDL-8711/ I have the same problem with my truck. I may try the enclosed air cleaner trick too... Good luck!
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Joseph Chavez ![]() "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4 |
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#3 |
Georgia Boy
Join Date: Jun 2008
Location: Douglas, Georgia
Posts: 370
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Re: hard to start when hot!
Explain "hard to start".. is the starter dragging or does the engine turn over a few times before it'll start?
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81 GMC High Sierra, 2WD, 357ci/700R4, 3.73s, posi. |
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#4 |
86 C10
Join Date: Sep 2007
Location: Ga.
Posts: 416
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Re: hard to start when hot!
thats what i was thinking my truck use to be hard to start ended up being the starter twice so i added a heat shield and that took care of the problem.
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1986 C10 2001 chevy silverado purchased 8-29-09 sold 2004 silverado purchased 8-27-10 sold ![]() |
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#5 |
Robert Olson Transport
![]() Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,294
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Re: hard to start when hot!
the other thing is if the truck has headers sometimes it makes too much heat for the fuel line so youhave to move it so its not near the headers
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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#6 |
Registered User
Join Date: Jun 2009
Location: Lubbock, TX
Posts: 1,671
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Re: hard to start when hot!
this happened to mine, not only hard to start, but would cause vapor lock and the truck would just die on me randomly, used a transcooler i had in the garage, and made it into a fuel cooler, solved my prob, also added a heat shield to starter, it was getting fidgety
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#7 |
Slugish
![]() Join Date: Jan 2005
Location: Earlysville, Va.
Posts: 1,024
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Re: hard to start when hot!
have as wooden carb spacer on mine . Suppopsed to be the best for heat reduction
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#8 |
Don't Crush em Restore em
Join Date: Aug 2004
Location: Pinehurst, Texas
Posts: 764
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Re: hard to start when hot!
There are another couple of possible things to look at too, the timing may be to far advanced, or a vacum line in the wrong place. Both of these things can also cause a hard start problem when hot. I would do a check on the timing, it is cheap and fast.
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TexasJeff 2009 Silver with Linen Interior Cadillac DTS 1990 Red with White Top and Interior Ford Mustang GT convertible 1998 Red with Gray Interior, C3500 Chevy Crew Cab Dually ![]() ![]() ![]() ![]() ![]() ![]() |
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#9 |
Registered User
Join Date: Feb 2003
Location: Northern Germany,near Bremen
Posts: 684
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Re: hard to start when hot!
The starter doesn´t make any problems and it runs fine when hot.
The headers are really hot but it´s only an issue when i try to start. I have to turn 10 to 15 seconds sometimes and then he comes on slowly. Volker
__________________
My little US vehicle parts business: http://www.thegearheaddepot.com/ Come have a look! ![]() ´81 GMC C 10, Spanish Red |
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#10 |
Georgia Boy
Join Date: Jun 2008
Location: Douglas, Georgia
Posts: 370
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Re: hard to start when hot!
Headers are heat-soaking the starter. Had the same exact problem with mine. I added a heat shield to the starter and painted the headers with high-heat ceramic paint. That fixed that problem.
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81 GMC High Sierra, 2WD, 357ci/700R4, 3.73s, posi. Last edited by Albatrossian; 08-05-2009 at 05:46 PM. |
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#11 |
Account Suspended
Join Date: Aug 2009
Location: Paris, Tx
Posts: 16
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Re: hard to start when hot!
use a phenolic carb spacer. can order from summitracing for 30-40 bucks. are you using an aluminum intake, or cast iron?
if you ever have problems with your starter not working when the engine is hot, first use a heat shield over the solenoid, and second, put a relay at the solenoid. real simple solution, as a lot of the older chevys, or any vehicle for that matter, tend to have wiring breakdown after 10 or so years. just a lil info from a 12Volt mechanic. |
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#12 |
Registered User
Join Date: Apr 2009
Location: Tucson, AZ
Posts: 184
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Re: hard to start when hot!
ha i had the same problem for a couple months i just fixed it by adding a mini high torque starter by hitachi works great bolts right up and is wayyyy lighter than the other one i had on there.
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#13 |
Registered User
Join Date: Apr 2009
Location: Tucson, AZ
Posts: 184
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Re: hard to start when hot!
heres a pic of both before i installed the mini. it says its 9 pounds and the old one was like 25 maybe 30 at least it felt that way on my chest as i tried to get it out from under the truck
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#14 |
Registered User
Join Date: Mar 2008
Location: Salt Lake City UT
Posts: 441
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Re: hard to start when hot!
The above suggestions are correct, but also check your battery cables for corrosion. It increases resistance and as the cable becomes hot..resistance is again increased....causing the starter to drag.
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#15 |
1962 C-10
Join Date: Apr 2005
Location: Las Vegas, New Mexico
Posts: 4,978
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Re: hard to start when hot!
I don't think he's having starter issues. Sounds like he's having flooding issues caused by heat. I have the same issues with mine...
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Joseph Chavez ![]() "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4 |
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#16 | |
Registered User
Join Date: Feb 2003
Location: Northern Germany,near Bremen
Posts: 684
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Re: hard to start when hot!
Quote:
Volker
__________________
My little US vehicle parts business: http://www.thegearheaddepot.com/ Come have a look! ![]() ´81 GMC C 10, Spanish Red |
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#17 |
Registered User
Join Date: Jun 2007
Location: Arkanasas
Posts: 85
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Re: hard to start when hot!
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#18 | |
1962 C-10
Join Date: Apr 2005
Location: Las Vegas, New Mexico
Posts: 4,978
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Re: hard to start when hot!
Quote:
moneyeater, are you running an aluminum intake?
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Joseph Chavez ![]() "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4 |
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#19 |
Registered User
Join Date: Jul 2006
Location: La Habra
Posts: 22
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Re: hard to start when hot!
Before replacing the openning air cleaner my guess would be check the choke adjustment on the carb and or check the fuel line going into the carb it could be to close to the motor and creating vapor lock.
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#20 | |
Registered User
Join Date: Jul 2009
Location: cleburne texas
Posts: 174
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Re: hard to start when hot!
Quote:
hot air wont start haha ..do you have a edelbrock carb ?? I had a brand new one ..when you drove the car sometimes it would act like it was flooding out then run great and sometimes when it was hot it was hard starting oh no choke in 100+ weather i took the top off the carb and it had metal shavings in it i run a filter at the tank then one before carb it was brand new in the maching process it had pieces of that chrome crap in it Last edited by 78maliburat; 08-06-2009 at 08:37 PM. |
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#21 |
Registered User
Join Date: Feb 2003
Location: Northern Germany,near Bremen
Posts: 684
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Re: hard to start when hot!
Yes i´m running an edelbrock performer intake!
The thought about the fuelline getting hot is new but that could be the problem because it´s routed from the fuelpump next to the waterpump and then rests in the valley between the cylinderhead and intake and its hot there! Maybe i should lift it or use some hardline to get air around it! What problem can be caused by the choke? Its an e-choke! Volker
__________________
My little US vehicle parts business: http://www.thegearheaddepot.com/ Come have a look! ![]() ´81 GMC C 10, Spanish Red |
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#22 |
Registered User
Join Date: Apr 2009
Location: Tucson, AZ
Posts: 184
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Re: hard to start when hot!
if your set up is like mine then the fuel line should be steel all the way up till the alternator when i installed the new chrome one i had to cut it and add the rubber style goodyear fuel hose. heres how i ran it to avoid any heat by it resting near the heads or the intake. it also served as a safety move in case the ac hose decided to slip off the alternator bracket and get mangled in the belts
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#23 |
Kid's Mechanic
Join Date: Nov 2006
Location: Kansas City
Posts: 8,241
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Re: hard to start when hot!
Two of my trucks would vapor lock after header installs.One big block 76 and the truck I use for muding.The fuel line runs inside the right frame rail just Inches from the headers.I moved the fuel line to the outside of the frame.
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#24 |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: hard to start when hot!
Chances are the headers are hotter than they should be because the engine is running lean.
If you haven't tuned the carb for the headers and intake swap so you have the proper air / fuel ratio then you will have higher than normal exhaust gas temperatures which will make the headers hotter than they should be. This is causing the extra hot headers to heat soak the starter and heat up the air in the engine compartment more than it should. You may have a combination of a hot starter and a vapor lock issue because of it. Get an air / fuel meter and jet the carburetor to match your combination before you go changing any parts. |
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#25 | |
1962 C-10
Join Date: Apr 2005
Location: Las Vegas, New Mexico
Posts: 4,978
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Re: hard to start when hot!
Quote:
That's a great idea! Never thought of that. Hey Volker! Have you tried anything? Still having issues?
__________________
Joseph Chavez ![]() "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4 |
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