Notices

Engine won't start after 2.5 engine build - Maf scale?

Thread Tools
 
Search this Thread
 
Old 03 April 2011, 08:18 PM
  #1  
Rob-S
Scooby Regular
Thread Starter
iTrader: (5)
 
Rob-S's Avatar
 
Join Date: Feb 2004
Posts: 940
Likes: 0
Received 0 Likes on 0 Posts
Default Engine won't start after 2.5 engine build - Maf scale?

Hi Guys,
I am having problems getting my engine to start after fitting a 2.5 litre block and upping the intake pipe size to 70mm.
The car fires once then just cranks over, I do get faults P0102 and P0113 after cranking for a few seconds.
Couls this be due to Maf scaling or should I be looking elsewhere?
Old 03 April 2011, 09:07 PM
  #2  
Jay m A
Scooby Regular
iTrader: (2)
 
Jay m A's Avatar
 
Join Date: May 2000
Location: Class record holder at Pembrey Llandow Goodwood MIRA Hethel Blyton Curborough Lydden and Snetterton
Posts: 8,626
Likes: 0
Received 0 Likes on 0 Posts
Default

If you are using the same MAF in its same housing then it isn't a MAF scaling issue
Old 03 April 2011, 09:31 PM
  #3  
Rob-S
Scooby Regular
Thread Starter
iTrader: (5)
 
Rob-S's Avatar
 
Join Date: Feb 2004
Posts: 940
Likes: 0
Received 0 Likes on 0 Posts
Default

Same maf but the pipe has been changed from a 65 to a 70mm.
Old 03 April 2011, 09:35 PM
  #4  
Rob-S
Scooby Regular
Thread Starter
iTrader: (5)
 
Rob-S's Avatar
 
Join Date: Feb 2004
Posts: 940
Likes: 0
Received 0 Likes on 0 Posts
Default

The maf housing is part of the pipe.
Old 03 April 2011, 10:22 PM
  #5  
dabow
Scooby Regular
iTrader: (19)
 
dabow's Avatar
 
Join Date: Nov 2005
Location: notts
Posts: 2,770
Likes: 0
Received 0 Likes on 0 Posts
Default

by any chance did you not change the crank sprocket.

as theres differnt ones.
Old 03 April 2011, 10:55 PM
  #6  
Butty
Scooby Regular
iTrader: (2)
 
Butty's Avatar
 
Join Date: Oct 2000
Location: MY06 STi Spec D
Posts: 5,254
Likes: 0
Received 1 Like on 1 Post
Default

Either the MAF is broken (did you drop it?) or the plug hasn't been pushed all the way in.
There may also be a common earth that hasn't been located properly.
Old 04 April 2011, 06:17 AM
  #7  
Rob-S
Scooby Regular
Thread Starter
iTrader: (5)
 
Rob-S's Avatar
 
Join Date: Feb 2004
Posts: 940
Likes: 0
Received 0 Likes on 0 Posts
Default

Sprocket is the original one from my 2ltr.
Can't remember dropping the sensor but out had been moved around a lot. I'll have a check to see if I have missed any grounds.
Cheers.
Old 04 April 2011, 09:59 AM
  #8  
Jay m A
Scooby Regular
iTrader: (2)
 
Jay m A's Avatar
 
Join Date: May 2000
Location: Class record holder at Pembrey Llandow Goodwood MIRA Hethel Blyton Curborough Lydden and Snetterton
Posts: 8,626
Likes: 0
Received 0 Likes on 0 Posts
Default

Should still fire up and run going from 65-70 on cold enrichment IMO but IMO you should refit the original housing if you are planning on driving to your mapper, then swap it over once there.

Good luck finding the issue
Old 04 April 2011, 06:37 PM
  #9  
Rob-S
Scooby Regular
Thread Starter
iTrader: (5)
 
Rob-S's Avatar
 
Join Date: Feb 2004
Posts: 940
Likes: 0
Received 0 Likes on 0 Posts
Default

Found a couple of grounds that I had missed on the inlet manifold behind the air con pump.
Just waiting for the battery to charge up overnight now.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Scott@ScoobySpares
Full Cars Breaking For Spares
7
14 December 2015 08:16 AM
Brett-wv14
Subaru
17
06 October 2015 09:03 PM
Bazil_SW
Engine Management and ECU Remapping
24
21 September 2015 11:55 PM
ossett2k2
Engine Management and ECU Remapping
12
17 September 2015 08:47 PM
scooby bowman
Engine Management and ECU Remapping
8
07 September 2015 07:39 PM



Quick Reply: Engine won't start after 2.5 engine build - Maf scale?



All times are GMT +1. The time now is 04:53 PM.