engine cranks to long - Team Camaro Tech
Engine General Engine Discussion.

 
LinkBack Thread Tools Display Modes
post #1 of 11 (permalink) Old Dec 31st, 04, 09:29 AM Thread Starter
Senior Tech
 
Join Date: Jan 2003
Location: Odessa,TX
Posts: 259
Post

hey guys i have a ? about my engine. for some reason it tends to crank for a bit before it fires up, even after the engine is warm. it will crank for a good 5 seconds before it will turn on. what causes this. its not fuel injected but i figured it should fire up pretty easily once the car has warmed up.
thanks,
zack
zack 68 is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old Dec 31st, 04, 09:52 AM
Senior Tech
 
Join Date: May 2001
Location: Ashby,MN, USA
Posts: 8,305
Post

some engines are just like that- what kind of carb are you using? what's your starting procedure? where's your initital timing set at? how fresh is the engine? what kind of compression are you running? choke or not? points or HEI?
there are a lot of variables- but if you have a fresh 10:1 engine with 15 degrees of inittial timing cranked into your HEI distributor and a fresh q-jet on top of it- it should almost fire right off.
but if you have a 100,000 mile engine with a dying Holley carb on it with 5 degrees of initial timing in your old points distributor with worn out points, then you might have a little bit of cranking time before things light off.
i know i probably didn't help much, but i kind of felt like typing..

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
novaderrik is offline  
post #3 of 11 (permalink) Old Dec 31st, 04, 10:08 AM Thread Starter
Senior Tech
 
Join Date: Jan 2003
Location: Odessa,TX
Posts: 259
Post

hey derek,
its a newly rebuilt engine. 9.5 to one compression, mallory unilite dis. carter competition 4bbl carb, 280/280 adv duration cam with .450 lift,edelbrock performer intake,hooker supercomp headers. any ideas? the timing was set with the #1 piston at tdc but i don't know if the timing is advanced or retarded?
zack 68
zack 68 is offline  
 
post #4 of 11 (permalink) Old Dec 31st, 04, 10:34 AM
Moderator
Kevin
 
KevinW's Avatar
 
Join Date: Jul 2000
Location: Millstone, NJ
Posts: 11,070
Post

Mine has always taken long to fire, original 327 engine and new 350/300 engine. They both did the same thing. The only thing that is common to both engines is the electrical. I have not figured it out yet.

Kevin


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
KevinW is offline  
post #5 of 11 (permalink) Old Dec 31st, 04, 11:35 AM
Senior Tech
Bob
 
Join Date: Dec 2000
Location: Ct.
Posts: 1,145
Post

It soumds to me like you are losing your fuel prime to the carb. You also don't want your timing at TDC. Usually you want between 8 and 15* of advance. If you pour a little gas in the carb will it fire right off? If you pump the throttle rod do you see fuel squirt into the carb? Is it vapor locking?

Bob
Garnet Red 69/SS396/TH400/355 Posi Sold
'02 triple blk Vette Vert. now
94 HD Dyna Wideglide
phel69 is offline  
post #6 of 11 (permalink) Old Dec 31st, 04, 01:39 PM
Tech Team
Thomas
 
Join Date: Dec 2000
Location: West Covina, CA
Posts: 63
Post

I would start with the timing. Once you eliminate that problem if it still won't fire right up move to the fuel delivery system. Good luck...

70rs
Slomaro is offline  
post #7 of 11 (permalink) Old Dec 31st, 04, 03:01 PM
Senior Tech
Chad
 
67 Plum's Avatar
 
Join Date: Jan 2003
Location: Thomasville,Ga.
Posts: 4,386
Post

Make sure you are getting 12 volts to the ignition when cranking.Low voltage will make one slow to start.

67 Plum Mist Met. 408 TH350 3.08 posi
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
67 Plum is offline  
post #8 of 11 (permalink) Old Dec 31st, 04, 03:20 PM
Team Member
John
 
JohnZ's Avatar
 
Join Date: Sep 2000
Location: Washington, Michigan USA
Posts: 7,728
Post

Quote:
Originally posted by zack 68:
hey derek,
its a newly rebuilt engine. 9.5 to one compression, mallory unilite dis. carter competition 4bbl carb, 280/280 adv duration cam with .450 lift,edelbrock performer intake,hooker supercomp headers. any ideas? the timing was set with the #1 piston at tdc but i don't know if the timing is advanced or retarded?
zack 68
Put a timing light on it and set it correctly (with the vacuum advance disconnected and plugged); if you don't know what the timing is, you don't have any baseline to work from. [img]graemlins/thumbsup.gif[/img]

JohnZ
CRG
JohnZ is offline  
post #9 of 11 (permalink) Old Dec 31st, 04, 03:32 PM
Senior Tech
 
Join Date: Mar 2002
Location: Austin, TX, USA
Posts: 5,277
Post

You should be able to tap the accellerator pedal to set the choke and give it a shot of fuel. It should fire within the first few revolutions. Do you have a choke? Do you tap the accellerator pedal once to trip the choke mechanism before starting?

Dave
========================
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
dnult is offline  
post #10 of 11 (permalink) Old Dec 31st, 04, 03:34 PM Thread Starter
Senior Tech
 
Join Date: Jan 2003
Location: Odessa,TX
Posts: 259
Post

yes i do hit the pedal a couple of times before a cold start, and it does start up quickly, but after its warm should i still have to give it gas to get it to start? also my balancer doesn't have a timing strip on it. [img]graemlins/sad.gif[/img] can i buy one to stick on it or do i have to get a balancer with it allready? thats the reason i set it with the #1 piston on top and not a timing light. could this also be robbing my HP. i feel the car should accelarate better than it does.
zack 68
zack 68 is offline  
post #11 of 11 (permalink) Old Dec 31st, 04, 03:52 PM
Gold Lifetime Member
Jim
 
Join Date: Dec 1999
Location: Yorkville, Illinois USA
Posts: 22,121
Post

Timing off can for sure rob power.

There's about azillion different combinations of balancers and timing tabs, some tabs are built into the cover, some use 2 of the cover bolts.

The balancer should just have a single groove in it.

If you know the part # of the balancer, or the car/engine it came from, dealer can probably look up the right tab.

Or you could just do the "set it by ear method".





To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
New website for my vert is coming together. Do ya like the slide show on the home page?
JimM is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome