[1.6 fsi] - Misfire or something else

New filter. Group 140 pressure values check out. 60 idle and 100+ @ 2.5k rpms.

EDIT: It threw a P1504 at some point. Cleared it and it is never coming back from the looks of it. It is a start.
 
New filter. Group 140 pressure values check out. 60 idle and 100+ @ 2.5k rpms.

EDIT: It threw a P1504 at some point. Cleared it and it is never coming from the looks of it. It is a
Once you can drive it, log 140. It's pressure regulation, especially with varying engine load, that's critical.
Mac.
 
I thought I'd found the culprit; a kinked servo vacuum line.

Might need replacing but I don't think that was indeed to blame. I taped it up with self-amalgamating tape.
 
Hi Mac. I checked. I cannot tell exacty by how much as it has gone dark and I am exhausted. I'd just come back from a 20min drive and got the idea.

Must be a couple of teeth at most. Maybe even just 1. Or at least within the adjustment range.

I checked the timing at least 4 times on two consecutive days before puttting the motor back in.

Evros
 
In all honesty I should have sorted it out because other things are more important.

I have to do some preparations for this winter, get the motorbike sorted, housework, etc.

The a2 sits in the middle of everything as I cannot take it anywhere, SORN etc. It keeps getting in the way of things, I mean physically, I have to be able to move it from where it usually resides.
 
Oh, it sounds like you need to take stock?

Its difficult to know what to suggest for the best, plus its not my place to do so.

You, not the car should be top if the list when it comes to working well.
If I were to ask you to jot down as many ideas that come into to your head. Pacing your happiness at in the middle of the piece of paper and work out from that centre. Where is the FSI in this diagram?
20241008_103711.jpg

Good luck🙂👍

Edit
There is no need to share the answer to the question above 'where is the FSI in this diagram?' It's just for you to take stock.🙂

EDIT II
Just wanted to say I just made happiness diagram and I could do with a holiday.
🌞
 
Last edited:
Thank you for your kind words Andrew. In all honesty, it would be very low in the list or not even on the diagram if I am honest.

I have done what Mac has been suggesting all along. Loaded the label file and went through the blocks.

I am having increasing misfires on cylinder 4 and an engine load of 20% at all times.

Block 141 reads out 0% all across and 12 at the system status.

I have noticed some frayed wiring on Cylinder 4.

FIY, I am doing this in the small amount of time that I have with nothing to do.

Evros
 
Thank you for your kind words Andrew. In all honesty, it would be very low in the list or not even on the diagram if I am honest.

I have done what Mac has been suggesting all along. Loaded the label file and went through the blocks.

I am having increasing misfires on cylinder 4 and an engine load of 20% at all times.

Block 141 reads out 0% all across and 12 at the system status.

I have noticed some frayed wiring on Cylinder 4.

FIY, I am doing this in the small amount of time that I have with nothing to do.

Evros
Block 141 is still a mystery, no real idea what it is.. The block text is just incorrect, still trying to work out what the blocks are..Ross-Tech don't know either! Group 140 fuel system, pressure and regulation.
If just one cylinder, probably not fuel, electrics first suspect.
Mac.
 
OK,

I'll just write what happened in bullet points:

1. Did compression test, about 180-200 psi all.
2. Mixed matched coils and spark plugs in the process because I was in a hurry.
3. Cylinder 4 has frayed wiring.
4. All connectors have been replaced while the engine was out.
5. I got the compression tester stuck in cylinder 4. Penetrating oil and wiggling took it out.
6. Put it all back in, no misfires at all.
7. Revved it, misfires appeared in Cylinder 3 and 4.

I am leaning towards electrics. May have to redo the loom? Continuity test at the very least.

Evros
 
OK,

I'll just write what happened in bullet points:

1. Did compression test, about 180-200 psi all.
2. Mixed matched coils and spark plugs in the process because I was in a hurry.
3. Cylinder 4 has frayed wiring.
4. All connectors have been replaced while the engine was out.
5. I got the compression tester stuck in cylinder 4. Penetrating oil and wiggling took it out.
6. Put it all back in, no misfires at all.
7. Revved it, misfires appeared in Cylinder 3 and 4.

I am leaning towards electrics. May have to redo the loom? Continuity test at the very least.

Evros
And engine earth, from behind headlight, check clean and bright.
Also, based on another members experience, unplug ECU, clean connector, both sides, allow to dry, before re-connection.
Mac.
 
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