What would cause slow engine cranking? - RX7Club.com



What would cause slow engine cranking?

Reply
 
 
Old 04-27-06, 10:47 PM
  #1
Likes to swear....alot
Thread Starter
iTrader: (3)
 
R.P.M.'s Avatar
 
Join Date: Dec 2002
Location: Kitchener Ontario Canada
Posts: 3,789
What would cause slow engine cranking?

Ok, I have this S4 N/A FC here that cranks over just slow enough that it wont start and then it floods.

I've changed the starter 3 times with spares that I have sitting around and I've cleaned all the connections to the starter and on the battery itself. The battery is around 13v and has lots of power.

What else would cause it to crank over slow? I'm kinda stumped....doesn't really help that its late either.

Joe
R.P.M. is offline  
Reply With Quote
Old 04-27-06, 11:22 PM
  #2
Full Member
5 Year Member
 
Join Date: Nov 2001
Location: Adelaide, Australia
Posts: 88
What does the battery voltage drop to when you crank and how is it?
getbent69 is offline  
Reply With Quote
Old 04-27-06, 11:31 PM
  #3
*MODERATOR*
iTrader: (142)
 
misterstyx69's Avatar
 
Join Date: Sep 2005
Location: Smiths Falls.(near Ottawa!.Mapquest IT!)
Posts: 24,944
Clean the Area around the Starter,and "scuff up " the Bolt holes,to get a good contact to Ground,(maybe Clean the thread For the bolts by Retapping them)also Try changing The Positive cable..it sounds like it just ain't gettin Good voltage Joe..Other than that..Another starter?..Just thought too..check the bolts on the Tranny maybe they are loose and not giving you good conductivity..(all I can think of Joe ..)
misterstyx69 is offline  
Reply With Quote
Old 04-27-06, 11:56 PM
  #4
brap-brap-brap
10 Year Member
iTrader: (1)
 
Join Date: Mar 2004
Location: Los Angeles, CA
Posts: 287
Yep - sounds like an electrical problem. Not enough voltage. Either its your battery or the connections.
jon0886 is offline  
Reply With Quote
Old 04-28-06, 12:06 AM
  #5
Likes to swear....alot
Thread Starter
iTrader: (3)
 
R.P.M.'s Avatar
 
Join Date: Dec 2002
Location: Kitchener Ontario Canada
Posts: 3,789
Yeah I guess I'll have to trace all the wiring back to the starter, the car never ever did crank over all that fast since the guy got the car.
R.P.M. is offline  
Reply With Quote
Old 04-28-06, 08:58 AM
  #6
spending too much money..
10 Year Member
iTrader: (2)
 
hondahater's Avatar
 
Join Date: Dec 2002
Location: louisiana
Posts: 10,117
well I'm having the same issue on an intermittant level and basically what made it better was cleaning the main stock ground as well as adding another body ground from the battery using a nice big 4 guage cable. Next I'm going to try to change my ignition switch.
hondahater is offline  
Reply With Quote
Old 04-28-06, 09:04 AM
  #7
FKITALL
10 Year Member
iTrader: (14)
 
The Wankler's Avatar
 
Join Date: May 2004
Location: Dublin Ca.
Posts: 3,589
Mine does the same thing. Voltage drops to about 7.v when I am cranking it.
The Wankler is offline  
Reply With Quote
Old 04-28-06, 05:43 PM
  #8
Likes to swear....alot
Thread Starter
iTrader: (3)
 
R.P.M.'s Avatar
 
Join Date: Dec 2002
Location: Kitchener Ontario Canada
Posts: 3,789
Yeah, actually I just tried it again and the stock amps gauge drops to about 7 volts as well.....hmmmm
R.P.M. is offline  
Reply With Quote
Old 04-28-06, 05:56 PM
  #9
FKITALL
10 Year Member
iTrader: (14)
 
The Wankler's Avatar
 
Join Date: May 2004
Location: Dublin Ca.
Posts: 3,589
.Well, I have done a battery relocation, and added a ton of electronics. Have you tested the voltage at the battery? Hailer, I think mentioned, or maybe it was Icemark. Test the battery terminals for a drop. Then test the battery clamps. If the battery drains, could be the battery. If only drains at the connectors, something else.
The Wankler is offline  
Reply With Quote
Old 04-28-06, 08:10 PM
  #10
Rx-hippie
10 Year Member
iTrader: (1)
 
trainwreck517's Avatar
 
Join Date: Sep 2003
Location: Torrance CA
Posts: 2,076
How many cranking amps is the battery, and how cold is it when your trying to crank it?

I would just add a nice fat engine ground directly from the battery.
Change the cable connectors for the battery.
Clean the Battery terminal post.

If is still doing it, I would verifie that the starter inductance is up to spec.

Hope that helps.
trainwreck517 is offline  
Reply With Quote
Old 04-28-06, 08:16 PM
  #11
Who are you?
5 Year Member
 
jgrts20's Avatar
 
Join Date: Mar 2003
Location: CenCal
Posts: 2,235
mines does the same thing when its really cold out, but when warmed up it will start fine all day. Its just that sittng around at night when cold that does it.

Last edited by jgrts20; 04-28-06 at 08:45 PM.
jgrts20 is offline  
Reply With Quote
Old 04-28-06, 08:42 PM
  #12
I
iTrader: (6)
 
KompressorLOgic's Avatar
 
Join Date: May 2004
Location: Renton, WA
Posts: 3,565
dang mine never drops that low while cranking i see 10 at least
KompressorLOgic is offline  
Reply With Quote
Old 04-29-06, 01:45 AM
  #13
Senior Member
5 Year Member
 
gxlspeeder's Avatar
 
Join Date: Oct 2003
Location: idaho
Posts: 732
take your battery to a parts store and have them actually test how much power is in it. 13 volts won't turn an engine over 400+ cranking amps will.
gxlspeeder is offline  
Reply With Quote
Old 04-29-06, 06:43 PM
  #14
Likes to swear....alot
Thread Starter
iTrader: (3)
 
R.P.M.'s Avatar
 
Join Date: Dec 2002
Location: Kitchener Ontario Canada
Posts: 3,789
LOL...yeah I got it figured out, whoever put the clutch in the car last, never put that big ground wire back onto the bellhousing.

Now it works awesome, starts up great and runs waaay better.

Thanks for the info guys!
R.P.M. is offline  
Reply With Quote
 
 
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
freq
Microtech
1
08-23-15 11:02 AM
PhillyFC
General Rotary Tech Support
9
08-21-15 06:36 PM
freq
2nd Generation Specific (1986-1992)
0
08-21-15 03:30 PM
trickster
2nd Generation Specific (1986-1992)
17
08-18-15 09:16 AM
befarrer
2nd Generation Specific (1986-1992)
4
08-14-15 04:18 PM



Thread Tools
Search this Thread

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 08:28 PM.


All content Copyright 2007 by Internet Brands, Inc.