Are you madabout kit cars      
 "We've Got Kit Cars Covered" Information about Madabout-Kitcars.com Contact Madabout-Kitcars.com         Home of UK kit cars - madabout-kitcars.com Various kit car write ups All the latest kit car news Kit car related and general discussion

Search
Manufacturers
Kit Cars
Kit Car Data sheets
Picture Gallery
SVA Knowledgebase
Clubs & Communities
Build cost estimator
Kit cars for sale
Knowledge Base 
KitcarUSA.com
Classic-Kitcars.com
 

Go Back   Madabout Kitcars Forum > Mad Chat > General chatter

General chatter This is the place to talk about anything kit car related that doesn't come under any of the other categories

Reply
 
Thread Tools Display Modes
  #1  
Old 7th April 2006, 16:06
dougle00 dougle00 is offline
Junior Member
Kit Car Dreamer
 
Join Date: Apr 2006
Posts: 7
dougle00 is on a distinguished road
Default For the love of God please help me (Fuel system)

Hi, I am going nuts. I have a Dax Rush with what I believe to be a fuel problem. It is hunting at idle and misfiring when acellerating. It is driving me mad. When I turn the key a few times to prime the system with fuel it starts ok and runs for a while then does it again after a while.

I have changed fuel filters and pump. The old pump made some funny noises ocassionally and the new one is doing the exact same thing.

Any ideas whats up? It is a Sierra 2.0i engine???? PLEASE PLEASE help.

Last edited by dougle00; 7th April 2006 at 16:09..
Reply With Quote
Available from eBay
  #2  
Old 7th April 2006, 16:38
mapper mapper is offline
Member
 
Join Date: Sep 2003
Location: East Midlands
Posts: 41
mapper is on a distinguished road
Default

Hi, bit more info needed, are you running carbs or is it injected, which ignition set have you got, whip the plugs out note each ones colour, i.e running rich or lean do you have an idle control valve fitted.
Mark
Reply With Quote
  #3  
Old 7th April 2006, 17:19
dougle00 dougle00 is offline
Junior Member
Kit Car Dreamer
 
Join Date: Apr 2006
Posts: 7
dougle00 is on a distinguished road
Default

Thanks for the reply Mark. The engine is injected and I have had a look at the plugs and they are as black as my chimney, looks like carbon fouling. As for the ignition system do you mean the HT leads? There is indeed an idle speed control valve, but I have never touched it.


Any suggestions appreciated.

Last edited by dougle00; 7th April 2006 at 17:25..
Reply With Quote
  #4  
Old 8th April 2006, 08:35
mapper mapper is offline
Member
 
Join Date: Sep 2003
Location: East Midlands
Posts: 41
mapper is on a distinguished road
Default

Ok, obviously running far too rich, fouled up plugs and excessive fuel causing the misfire, Start with the basics first, check ALL connections to the compenents of the engine management system for security and corrosion etc. Pull the gaiters back on the connectors and ensure there are no broken wires, Check all intake and vacuum hoses are intact and that no unmeasured air is getting into the engine. With the engine cold check the resistance value across the coolant sensor for the EMS. Either take it out and put it in hot water or warm up the engine and check the value again, there should be a dramatic change.(sorry no exact values to hand I can quote). If no change replace the sensor. Try all this for starters. there is more.
Surging problem probably linked to above but I would remove the idle control valve and clean it, also it's pipework and the bypass port in the inlet manifold.
HTH
Mark
Reply With Quote
  #5  
Old 8th April 2006, 13:55
holgate86 holgate86 is offline
Senior Member
Enthusiast
 
Join Date: Apr 2004
Location: Stockton on Tees
Posts: 191
holgate86 is on a distinguished road
Default hunting at idle

The Sierra injection engine has common problems relating to idle faults, firstly the throttle butterfly and idle valve get carbon deposits buiding up over time and require a thorough cleaning with good carb cleaner. There is a mod on the butterfly that ford recommended which is to drill a 2mm hole through it, if it hasn't already got a hole that is (this is a known cure as I have done many in my daily job). There is a procedure for setting the throttle stop depending on the year etc, is it sohc or dohc. The idle valve may need to be replaced if the hunting doesn't stop. The misfire is probably unrelated to idle problem and it's worth checking all the ignition components or just replace them if they're getting old.

hth

Brian
Reply With Quote
  #6  
Old 8th April 2006, 14:58
dougle00 dougle00 is offline
Junior Member
Kit Car Dreamer
 
Join Date: Apr 2006
Posts: 7
dougle00 is on a distinguished road
Default

Thanks guys, really appreciate the help, will have a go at what you reccomended and see if it helps. Engine is OHC btw.

Thanks boys.

Andy
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

Forum Jump


All times are GMT +0. The time now is 11:17.

copyright © madabout-kitcars.com 2000-2024
terms and conditions | privacy policy