DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Starting Problem

Thread Tools
 
Search this Thread
 
Old 09-16-2008, 12:35 PM
  #1  
Elite Member
Thread Starter
iTrader: (3)
 
skidude's Avatar
 
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 2,023
Total Cats: 19
Default Starting Problem

Sometimes when trying to start the car, it turns over about half a turn, stops like the battery is dead, then continues and starts just fine.

The battery is fully charged, and was new 18months ago, so it shouldn't be a bad battery.

Didn't have this problem when the car was stock, but I don't recall when exactly it started. Sometime between when it was stock and when I was running MS and the 460cc injectors.

I know it does it when cold, but I think (actually haven't noticed) it also does it when warm. I'll have to pay attention and see if it's only a cold-start issue or an all-the-time issue.
skidude is offline  
Old 09-16-2008, 12:43 PM
  #2  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,494
Total Cats: 4,080
Default

my bet is it has too much PW while cranking.
Braineack is offline  
Old 09-16-2008, 12:51 PM
  #3  
Senior Member
iTrader: (1)
 
budget racer's Avatar
 
Join Date: Apr 2007
Location: North Jersey
Posts: 717
Total Cats: 0
Default

could it simply be the starter getting ready to take a ****?
budget racer is offline  
Old 09-16-2008, 01:24 PM
  #4  
Elite Member
Thread Starter
iTrader: (3)
 
skidude's Avatar
 
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 2,023
Total Cats: 19
Default

Originally Posted by budget racer
could it simply be the starter getting ready to take a ****?
It doesn't seem like it, since most of the time it works great. it's only once in a while that it hangs up like this.
skidude is offline  
Old 09-16-2008, 01:26 PM
  #5  
Elite Member
Thread Starter
iTrader: (3)
 
skidude's Avatar
 
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 2,023
Total Cats: 19
Default

Originally Posted by Braineack
my bet is it has too much PW while cranking.
What sort of PW should I be running for 460cc on a 1.8?

Right now they're between 3.2 and 8.8 going down the temp scale.
skidude is offline  
Old 09-16-2008, 02:47 PM
  #6  
Newb
 
RedMiata's Avatar
 
Join Date: Sep 2008
Location: SC
Posts: 43
Total Cats: 0
Default

When I was running my stand alone SDS and I had advanced timing to much I would get the same issue. Just a thought.
RedMiata is offline  
Old 09-16-2008, 03:50 PM
  #7  
I'm Miserable!
iTrader: (1)
 
Tremiata's Avatar
 
Join Date: Jun 2007
Location: Lakeland, FL
Posts: 140
Total Cats: 0
Default

Between this post and your other post about the fan mod, maybe your ignition switch has issues.
Tremiata is offline  
Old 09-16-2008, 04:32 PM
  #8  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,494
Total Cats: 4,080
Default

Originally Posted by skidude108
What sort of PW should I be running for 460cc on a 1.8?

Right now they're between 3.2 and 8.8 going down the temp scale.

sounds like the stock values from the mspnp base map.

did you calculate them for larger injectors?

take 1ms off each. then multiply by the % increase of the 460s over the 265s.

so if the 160* value was 3.2. take 2.2 (since 1ms is opening and closing time) and multiply by .73 (27% larger) and get 1.6 and add the 1ms back in. This gives you 2.6 for the value.
Braineack is offline  
Old 09-16-2008, 04:37 PM
  #9  
Elite Member
Thread Starter
iTrader: (3)
 
skidude's Avatar
 
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 2,023
Total Cats: 19
Default

Originally Posted by Braineack
sounds like the stock values from the mspnp base map.

did you calculate them for larger injectors?

take 1ms off each. then multiply by the % increase of the 460s over the 265s.

so if the 160* value was 3.2. take 2.2 (since 1ms is opening and closing time) and multiply by .73 (27% larger) and get 1.6 and add the 1ms back in. This gives you 2.6 for the value.
There must be my problem. I tried fixing those values for the new injectors but it wouldn't start. I forgot to take the opening and closing time into account. I'll re-do that and see how it goes.
skidude is offline  
Old 09-16-2008, 08:23 PM
  #10  
Newb
 
Cowpoke's Avatar
 
Join Date: Oct 2006
Location: Boston, MA
Posts: 36
Total Cats: 0
Default

I have the same exact problem. For me, it was the wire on the starter shaking loose when the motor cranked over. I still haven't managed to fix it yet (the wire wont stay secured on the starter).
Cowpoke is offline  
Old 09-23-2008, 04:50 PM
  #11  
Newb
 
Cowpoke's Avatar
 
Join Date: Oct 2006
Location: Boston, MA
Posts: 36
Total Cats: 0
Default

Did you ever figure out what the problem was? I thought I had fixed it in my car (by securing the starter wire clip better) but it all of a sudden came back today and the car couldn't even turn over enough to start (luckily I was parked on a hill so I could roll-start it).
Cowpoke is offline  
Old 09-23-2008, 05:27 PM
  #12  
Elite Member
Thread Starter
iTrader: (3)
 
skidude's Avatar
 
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 2,023
Total Cats: 19
Default

Nope. I backed off the starting PW but it doesn't seem to have fixed the problem. Now it takes more cranks to start, but I think it only started doing that once I put the turbo on, which is strange.
skidude is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
84
04-12-2021 04:21 PM
The Gleas
MEGAsquirt
3
10-01-2015 09:30 AM
mx592
Suspension, Brakes, Drivetrain
1
10-01-2015 12:45 AM
zephyrusaurai
Meet and Greet
2
09-28-2015 10:59 PM



Quick Reply: Starting Problem



All times are GMT -4. The time now is 04:15 PM.