Jump to content

Misfire! ideas please


Recommended Posts

Hi all

 

OK swapped the loom for a new one and have replaced the IACV. But I have been left with a misfire. All injectors are connected and I cant find any problems with hoses etc. Do you think it could be that the sensor on attached to the hose on off the IACV is stuffed? There was oil in my air pipes so this will no be in the sensor Im guessing. Would this cause a misfire?

 

Thanks for any help Ill try your ideas on Saturday and see how we go.

Link to comment
Share on other sites

After Andy's checks.

With the ignition on but engine not running unbolt the CAS and turn slowly by hand you should be able to hear a click from each of the injectors. make sure that they are all getting thier signal. If they are then it's not your injectors.

 

test each plug one at a time buy pulling it out, connecting to it's coil pack and earthing out on the plenum, then crank the engine.

Link to comment
Share on other sites

After Andy's checks.

With the ignition on but engine not running unbolt the CAS and turn slowly by hand you should be able to hear a click from each of the injectors. make sure that they are all getting thier signal. If they are then it's not your injectors.

 

You can also do this by when the engine is running, place the tip if a longish screwdriver on top of the injector with the end held to your ear, you should hear it clicking. Do it to each one in turn, no click means injector not functioning, check connector / wiring first, if still not working, using a spare injector connector and a 9V battery, put power to the injector and then listen for the click. still no click usually means injector has failed.

Link to comment
Share on other sites

Guest andyduff
After Andy's checks.

With the ignition on but engine not running unbolt the CAS and turn slowly by hand you should be able to hear a click from each of the injectors. make sure that they are all getting thier signal. If they are then it's not your injectors.

 

You can also do this by when the engine is running, place the tip if a longish screwdriver on top of the injector with the end held to your ear, you should hear it clicking. Do it to each one in turn, no click means injector not functioning, check connector / wiring first, if still not working, using a spare injector connector and a 9V battery, put power to the injector and then listen for the click. still no click usually means injector has failed.

 

While that method does work, its often very difficult to hear the injector clicking above the background noise of the cams etc...

Link to comment
Share on other sites

Hey all

 

spoke to zed world they said clean up the temp sensor connectors first so I did this. cleaned up put it back and now it turns over but wont start! I took the CAS off and gave it a turn and II heard the injectors prime? sort of like a mechanical squirting noise Im guessing that means its working. Doesnt do anything more than that. Im starting to loose my mind! First a mis fire now it wont start!

Link to comment
Share on other sites

Thanks Andy

 

Spent the day putting the dash and everything back together The CAS and PTU are originals and the inside of the CAS was pretty corroded so Ive ordered some new ones from the states. Ill stick the new ones on and then take it from there have bought all new temp sensors as well for good measure. IT WILL BLOODY WORK!!! IT WILL!!!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

Terms of Use