Revotechnik



Go Back   SEAT Cupra.net - SEAT Forum » SEAT Model Specific Discussion Forum includes Members Projects » Ibiza » Ibiza Mk4

Ibiza Mk4 For the 2002 - 2008 model

Reply
 
Thread Tools Rate Thread Display Modes
Old 19-10-2017, 01:20   #21
Aokuan
Newbie
 
Join Date: Aug 2017
Posts: 9
Aokuan has 10 points
Quote:
Originally Posted by leo5566 View Post
whats your engine code i will try get you some pin outs
The engine code is BXV.
Cheers
Aokuan is offline   Reply With Quote
Old 23-01-2018, 16:09   #22
Aokuan
Newbie
 
Join Date: Aug 2017
Posts: 9
Aokuan has 10 points
I have finally solved the issue with the vehicle, so anyone who encounters this issue the following may be of use:

After doing all of the usual checks:

Checked Coil Pack - OK
Changed Spark plug - OK
Changed fuel injector - OK (Here was the issue I will discuss)
Compression test - all cylinders on equal PSI (150psi)
Checked fuel injector wires for correct voltage.
Checked coil pack wires for correct voltage.

Work carried out that did not fix the issue:

Cylinder head- All new valves, new valve guides, valve seals.
Cylinder head was lightly skimmed.
New Cylinder head gasket.
3 New coil packs BOSCH OEM.
3 New spark plugs.
New Timing Chain, Timing Chain Tensioner & Guide Rails.
Engine was properly timed with VW timing Tools.
ECU was sent off and Tested by ECUTesting.com which was working correctly.

With all of the work above I was not able to fix the problem, thankfully after doing some research I figured it must be an issue with the fuel delivery.

THE PROBLEM:

I had already attempted a check on the fuel injectors from one of the very first checks, however the fault code would not move when I changed the injector from the cylinder which was receiving the fault code (Expected result was the misfire code would move to a different cylinder after moving the suspect injector). I later discovered that it was all 3 cylinders that had the issue, I'm not sure if it was because of the incorrect delivery of fuel into the intake manifold before the valve which was getting into the other 2 cylinders causing trouble for the ECU firing.
This was one of the worst problems since the misfiring was evident through the entire RPM range, but only at 3000rpms would the ECU detect a very high amount of hydrocarbons and shut down one of the injectors. This is where the problem was undetectable for me as the computer would shut down a cylinder with the injector that wasn't the suspect injector, which I believe was due un-burnt fuel in the intake manifold being delivered to the other cylinders causing a rich air/fuel mixture then leading them to misfire.


HOW TO SOLVE THIS ISSUE:

I purchased a used set of injectors including the rail with it from someone breaking an 52 plate ibiza (with the confirmation that the donor injectors were working correctly - the car that they had come off had the piston break off and hit cylinder head ) , installed this unit on the engine, after starting the car up for the first time it was clearly running a lot smoother. And after some good old italian tune up on the motorway to clear the build up of carbon in the engine. This carbon build up from 5+ months of poor running and misfiring. The engine is now running smoothly, efficiently with no engine management light and now looks similar to a 4 cylinder in terms of vibration

CONCLUSION:

After experiencing this extremely frustrating and mystifying problem for 5 months now this is the cost comparison.

£500+ in attempt to fix the issue.
£35 to fix the issue by purchasing a used properly working set of injectors.

Ironically enough I took it to an "Auto Electrician" who I trusted and questioned, could it be the injectors causing the fault, after performing all of the checks which would correspond to a perfectly running engine. He replied "The fuel injectors wouldn't cause a fault like this" after knowing about the checks I've already performed. "Specialist Mechanics" my . Sadly a lot of mechanics are out there to rip you off and genuinely act nice whilst not knowing their stuff, going off common errors such as the coil pack problem.

Anyway before performing all of the work and going through the stress that I have in attempt to fix this problem your best bet is to check the exhaust emissions for hydrocarbons and disconnect the suspect injector to see if the hydrocarbons drop, this will tell you if there is a problem with injector spray pattern or fuel delivery.

Best of luck with solving the issue I hope this can save people a lot of time and money!

Cheers

Last edited by Aokuan; 23-01-2018 at 16:14.
Aokuan is offline   Reply With Quote
Old 24-01-2018, 10:33   #23
RUM4MO
Senior Member
 
Join Date: Jun 2008
Location: South Scotland
Posts: 4,359
RUM4MO has 40 points
That is good news, though as you have now discovered, you can not always rely on experienced experts to help with every problem, even though they usually aske for plenty money which makes you hope that they are well trained and at the top of their game!

I think that this is what drives so many of us to either dig deep ourselves, or move that car on to some other person.

Maybe to raise other's awareness of what can happen, I was at my local Audi main dealer yesterday to get my car MOT'd, the customer at the next table in the customer holding area was getting quite annoyed, it did sound like he handed his car in for an MOT and a repair that did not impact the outcome of the MOT test, it sounded like that Audi dealer gave that car what they call a "free health check" - then spent the rest of the day diagnosing and fixing small not MOT related faults, so by the end of the day the MOT was not carried out and the requirements of the initial requested repair were not addressed, that left that car in the workshop over the weekend and all of Monday until after the MOT, any required parts for the repair were ordered up, so that meant no car again on Tuesday with a promise that they would fast track it through the workshop on Wednesday! I must say that I felt that that incident could and should have been handled a lot better and a lot quicker, typical dealer ship service department, upselling and prioritising that over any thing else. After all, customers do not need their cars, do they, dealer just wants your wallet.
RUM4MO is offline   Reply With Quote
Reply

Bookmarks

« Previous Thread | Next Thread »

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

(View-All Members who have read this thread : 29
agde09, alexh, Aokuan, Badger, bert682, bobikuz, cheshire cat, chrisRibiza, corndog, Elliman98, fettweg, jezyg, jonial, kevinmcm19, leo5566, lil3520, Mike, propane94, raddo, RUM4MO, shek0, shunterkev, Sprabu, strentas, teddycatkin, Toledo TSI, tomo336, torrestech, turbod
Thread Tools
Display Modes Rate This Thread
Rate 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

Forum Jump


All times are GMT +1. The time now is 04:42.




Website © 2014 SEATCupra.net

Disclaimer: SEATCupra.net is not an official SEAT site and is not affiliated to SEAT in any way. Visit the Official SEAT Website.

SEATCupra.net are not directly responsible for information which maybe posted in this forum.
All content is viewed and used at your own risk. We do not warrant the accuracy or reliability of any of the information.
The views expressed herein are those of the individual contributors and not necessarily those of SEATCupra.net or SEAT
All trademarks and copyrights remain property of their respective owners.