Sick Golf R - EPC and flashing engine lights on (SOLVED: Fuel Injector)

[Man In Black (MIB)]

All done under warranty.

However, car started missing again tonight when under load and the engine light started blinking again. Didn't get the EPC light as I think I cut the load and added power in time for it not to shut down a cylinder, which it had been doing. New coils may not have fixed this issue.

Might try a bottle of fuel injector cleaner in the tank, despite only ever using 98. Just want to get this sorted as I'm fast losing my love affair with my Golf R.

[Lucas_R]

Could be an injector - either faulty or its clogged up with carbon.

Have the spark plugs been changed?

Has the fuel pump(s) (theres 2 of them) been checked. Also check the cam follower as theres a fair chance it needs replacing with 80,000km under its belt.

[Man In Black (MIB)]

Could be an injector - either faulty or its clogged up with carbon.

Have the spark plugs been changed?

Has the fuel pump(s) (theres 2 of them) been checked. Also check the cam follower as theres a fair chance it needs replacing with 80,000km under its belt.

Thanks Lucas-R. Been OS for last week so couldn't respond. Took the car for a spin yesterday afternoon and after a while she nearly died. Engine light came on then EPC when placed under a lot less load then what would produce the problem before. While it was going it was OK. However, at an intersection as I tried to get across she shuddered violently, almost backfiring, and could barely move off the mark. I'm going to talk to the dealer today and get it booked in with a request to look at the items you raised. I checked the previous services and the spark plugs were replaced at the 60K.

Thanks again

PS; Moderator, could you please removed the "Solved" tag on the thread. This isn't. Thanks.

[Man In Black (MIB)]

Solved.

Issue was a faulty spark plug on the no.3 cylinder. No signs of damaged on the plug either to give away what the problem was.

All four replaced and car just fine.

Thanks all.

[Lucas_R]

Issue was a faulty spark plug on the no.3 cylinder. No signs of damaged on the plug either to give away what the problem was.

Good to hear its fixed and that it was nothing serious. Do you know if the spark plugs been changed at an earlier service? I think its 60,000km that they are due on these engine (i have already replaced my plugs and ignition coils at 15,000km due to a small misfire).

[Ideo]

Glad to see it solved.

I have similar kms on mine so was interested to see what it would be.

[Man In Black (MIB)]

Ah...well. The problem came back again tonight.

Car started missing and shuddering when placed under load going up a hill. Engine light stared blinking then turned off when the EPC light came on, after it shut down the offending cylinder. Not that I have a fault code monitor on it but I can tell by the loss of power and engine sound.

Oddly enough, I'm thinking its not engine anymore. I'm thinking it has something to do with the engine management system or DSG. The reason being is each time this has happened the engine has been placed under load because the car hasn't changed down. Usually on an incline of some kind too. The car was fine all week, which is why I only today said it was solved, now it isn't.

I have also noticed it occurs when I have the cruise control either engaged or in the on/stand by position.

Another odd thing occurred when I had to stop with the EPC light on and a cylinder shut down. As I tried to move off in 1st gear the car revved to about 5-6000rpm and slowly shuddered and bunny hopped its way across the intersection until I changed the gear manually as Drive didn't seem to work. It did after that.

Back to the dealer on Monday morning. Why does this always happen on a Friday night???

[Lucas_R]

Time for some new ignition coils i think. High load and/or high RPM when they are working hard will show up any weaknesses in these, and they are renown for being fragile at the best of times. If you have done 80,000km on the stock ignition coils i'd be changing them. You can get a full set from USA for about $130

See here: http://www.vwwatercooled.com.au/foru...ad.php?t=83808

[Man In Black (MIB)]

Time for some new ignition coils i think. High load and/or high RPM when they are working hard will show up any weaknesses in these, and they are renown for being fragile at the best of times. If you have done 80,000km on the stock ignition coils i'd be changing them. You can get a full set from USA for about $130

See here: Business Red Series "E" Coil Pack group buy from ECS

It got four new ones three weeks ago. Car was fine for a week or so then bam. New spark plugs and car seemed fine for a week then bam again. And here we are.

I forgot to mention that when I drove up to the garage door I switched the engine off - as I didn't want the neighbours hearing my new air cooled engine (that's what it sounded like on 3 cylinders). When I switched it back on the EPC light was off and all four were going.

[Man In Black (MIB)]

Picking car up today from the dealer. Cylinder No.3 was the culprit again so they have replaced the injector for that cylinder. Will test and get back to you.