Help with the gti

[TyphoonFiST]

I'd pull the injectors and look at them. Could be buildup on them* food for thought!

Sent from my SM-N975U1 using Tapatalk

 

[PunkST]

We've got replacment injectors on the way.

 

[powermatt]

We've got replacment injectors on the way.

Forget who it was, but I recall watching someone tear down a C4 Corvette intake (talk about a pain) after they finally narrowed it down to an injector problem. Wouldn't start when hot, poor running when hot. Turned out the injectors were drastically increasing their resistance when heated up, which he proved with an oscilloscope and comparing the injectors to each other.

 

[PunkST]

Might have been hoonigan

 

[xxiaze]

I had to he same issue with my wife’s j series odyssey - it was Valve clearances

 

[PunkST]

We are going to clean the intake as well just to make sure.

 

[PunkST]

Pics incoming of the horror show. This car was NOT maintained well. And i dont think theve ever done any carbon cleaning. New injectors going on as well. I hope this solves the misfire problem for a long time.

 

[SteveS]

Think of it this way. The GTI was doing its part for the environment by capturing carbon and keeping it out of the air...

 

[powermatt]

We are going to clean the intake as well just to make sure.

Carbon cleaning is expensive and/or tedious to do. Generally nobody wants to do it, so nobody does it until it becomes a problem. By then, it's bad.

 

[PunkST]

Think of it this way. The GTI was doing its part for the environment by capturing carbon and keeping it out of the air...

Hahahahaha it was making the carbon tho

 

[PunkST]

The carbon was easily 1/8 thick on the tumble flaps for a couple of the cylinders. We had to really scrub even with the CRC.

 

[Ford ST]

It won't help with anything but the fuel injectors but in my opinion it is important to run high quality fuel injector cleaners every now and then. It is double important for direct injection engines.


When I worked in a shop we would do a three step fuel system clean. First was a very high quality fuel injector cleaner that just goes in the tank. Next I would clean the throttle body out, and the third thing was running a high-quality additive through the intake manifold with a metering device.



Sent from my LG-LS997 using Tapatalk

 

[PunkST]

Thats what Vw's 40k engine service has. Cost makes people skip it.

 

[TyphoonFiST]

This is where Frugality shines through.....people trying to drive a Performance hatch and not wanna use the correct fuel and oil to maintain an engine in tip top shape* Should've chosen a Moped! .... IMO

 

[PunkST]

Wasnt either of us. Pitfalls of a used car. Not knowing if the previous owners mistreated it.

 

[TyphoonFiST]

Wasnt either of us. Pitfalls of a used car. Not knowing if the previous owners mistreated it.

This the poopy side of buying a used car....I always try to get a vehicle if I buy used that is well taken care of with service records. I had a 98' Bonneville SSEI that was extremely well taken care of. The guy who owned it before me wrote everything down in small ledger and kept all the receipts in an Envelope. He gave it to me and I was like ....What is this? Then I looked at it and realized what it was..i then said here is a Cashiers check for the car. Every imaginable option minus the Adjustable suspension.....Best road trip car ever and that thing ripped after a minor ECM calibration and smaller pulley on the M90 blower.

 

[Ford ST]

Unfortunately direct injection engines hit the market before they started making changes to motor oil. Also in my personal opinion I believe we need to put more additives in gasoline. With direct injection engines being the norm and those injectors having to go through nasty conditions gasoline needs to change for them.



Sent from my LG-LS997 using Tapatalk

 

[Hypergram]

This the poopy side of buying a used car....I always try to get a vehicle if I buy used that is well taken care of with service records. I had a 98' Bonneville SSEI that was extremely well taken care of. The guy who owned it before me wrote everything down in small ledger and kept all the receipts in an Envelope. He gave it to me and I was like ....What is this? Then I looked at it and realized what it was..i then said here is a Cashiers check for the car. Every imaginable option minus the Adjustable suspension.....Best road trip car ever and that thing ripped after a minor ECM calibration and smaller pulley on the M90 blower.

This is one of the main reasons I take the car to a dealer for regularly scheduled maintenance, plus posting my mods and maintenance on vinwiki.

 

[M-Sport fan]

Unfortunately direct injection engines hit the market before they started making changes to motor oil. Also in my personal opinion I believe we need to put more additives in gasoline. With direct injection engines being the norm and those injectors having to go through nasty conditions gasoline needs to change for them.



Sent from my LG-LS997 using Tapatalk

I realize that our whole system is NOT an early VDub D.I. level injection setup.

But after seeing those injectors/valves/ports above, if it were not for the OBD2 plug-in inspection we must go through every year here, it makes me want to get an auxiliary 4 port injection setup and an integrated stand alone ECM to properly run/coordinate the whole thing.

BTW; I use 5 ounces of Red Line SI-1 injector cleaner (which has one of the highest concentrations of polyether amines of all of the available injector cleaners on the market) every third fill-up (with Shell VPower 93), and a WHOLE bottle (15 ounces) in the tank fill-up right before an oil change (with the lowest volatility, lowest sulfated ash/calcium containing, SN++ rated, Dexos 1 gen 2) FULLY synthetic, i.e.; all Group 4/5 oil I can find.

 

[M-Sport fan]

I had a 98' Bonneville SSEI that was extremely well taken care of. The guy who owned it before me wrote everything down in small ledger and kept all the receipts in an Envelope. He gave it to me and I was like ....What is this? Then I looked at it and realized what it was..i then said here is a Cashiers check for the car. Every imaginable option minus the Adjustable suspension.....Best road trip car ever and that thing ripped after a minor ECM calibration and smaller pulley on the M90 blower.

I tried to get my (now ex) wife at the time to go for a new '98 Bonnie with the huffer motor, and nicer bodywork, but she would not.

So we ended up with the plain old SE with the pedestrian, NA, L36 Series 2 3800, but we did get the much prettier alloy wheels as an option.
That car was pretty much bombproof, and trouble free, until she traded it in on a Montana minivan in '04, long after the divorce.