Please do another video on this one.

There’s a lot more to that fuel system than what you have learned. It injects fuel into the combustion chamber not the intake.

1980s VW/Porsche mechanic here. CIS fuel injection was extremely reliable, lasted forever, gave good fuel economy, and very easy to work on. The only thing that would kill it was severe fuel contamination. Considering the other fuel delivery systems at the time (Cross Fire Injection, anyone, Computer Command Control? I was also GM trained.) CIS was far superior. They only stopped using it because the parts were expensive to produce. Many of your early fuel delivery systems "just dump fuel" into the intake so that when the intake valve opens the fuel is there already. I'm so jealous you found this, I loved those cars. Pretty much all you needed to test the system was a fuel pressure gage with the correct CIS fittings. Fuel mixture was measured through an exhaust fitting before the cat and adjusted with a 3mm allen wench at the air flow sensor. Yes, you did need an emissions machine to properly set the fuel mixture. I had an exhaust gas analyzer at my shop before it was even a thing. You cracked the measured side of the fuel distributor, start with cracking the intake side to test fuel delivery (top center fitting). The device you assumed was oil related is the warm-up regulator. It applies low fuel pressure to the top of the air flow meter allowing it to lift higher supplying more fuel, as it warms the fuel pressure increases reducing the lift and leaning out the mixture. There is also a cold start injector that's triggered electronically to get the car started. To test fuel delivery to the injectors, just remove the rubber boot from the air flow meter and carefully lift up on the plate. A magnet works on the center bolt. The black box with all the braided lines is the fuel distributor. It uses internal fuel pressures to control the lift of the air flow sensor plate for warm-up and emissions. Plumbed into the side of the fuel distributor is the Frequency Valve, which is a solenoid that controls the differential pressure in the fuel distributor for emissions. Later CIS-E used an electromagnet device called the Differential Pressure Regulator..

@@gperrydawsonlll8118 It injects fuel directly behind the intake valve. Actually, carbon build up on the valves could be a problem causing poor cold running.

You should notice the injectors on these early type systems have a much nicer spray/atomisation than what came later, despite their being timed for the induction stroke of each cylinder.

Lol that is awesome! I’m sure you will learn plenty from this channel!

One of my favorite videos is still JR fixing a toilet at his house. Completely random, well edited, contains useful advice and there's plenty of can-do attitude. The type of video that makes you stand up and go tinker with something broken after watching it.

JR puts out a good variety of videos, ranging from property purchases (and restorations) and neat older vehicle finds which he either gets running or he owns them. One of the longest running items on the channel was an Audi R8 (he has sold since finishing it) but he chronicled the entire purchasing of a dead car and resurrecting it before selling it. Took him a few years to finish and the content was fantastic. Good luck checking g out his other videos. They are mostly very interesting.

Oh Vickie. As you already know, you are in for a real treat. Once you're all caught up with the newer vidoes, then you can go back and watch so many more. He's got such an awesome on camera energy and presence. He'll probably disagree with me, but 387,000 subscribers can't be wrong. LOL

huh ??? what kind of drugs are you on

YES !!

I agree with you 10%!

is it really? :)

Great car, shame about the name. The Mk1 Golf GTi is a very sought after, and appreciating classic.

Good thing the Mk1 VW's weren't clash timing.

Or it has a holy hand grenade rabbit in it. "Thou shall not count to 3..."

@@djapothecary "Five is right out!"

Could it have sat on shelf before that?

Non-interference motor. If it goes, you’re still alright

not sure why , it's only marginally good looking but it's completely underpowered and slow!

​@Hard_Right have you ever driven one of these mk1 Gti"s of this era? They're so lightweight that it Handel's amazing. It's really fun car to drive.

@@Hard_Right Everything from the era was underpowered and slow..... A modern KIA would be able to beat a sports car from that era in every metric....

@@Hard_Rightby today’s standards yes! But back then it was a pocket rocket!

@@Hard_Right Tell me what US Engine on us Highways was abel to run a whole day on full RPM without blowing of ? All US made cars on european highways are not abel to run on full trottel in more than 15 minutes . My first experiance with hunting a V8 camaro with my GTI was the camaro V8 engines blow off after 25 Minutes at 180 Km /h .... the 5,7 L V8 was beaten by a tiney 1.8 L .

Or seen the VW TV ad "Meinen GTI" set to the Beach Boys' hit song "Little GTO"

I took my driver's license road test in one in 1982, at 16. ha ha. Well, it was a '79 and not a GTi, but still a Rabbit. We always had such a great time in that car too. Damn thing would go anywhere, my mother even driving it across a creek one time.

It's a westy mk1...built in Westmoreland, PA

Oh he definitely will 👌🏼

It may have had only 100HP but the car only weighed about 2500 pounds. I had a 1981 Scirocco and they were fun to drive with a manual transmission

Unfortunatly the US made GTI´s was made with a lot of enviromental ,, silencers" . The european GTI`s didn`t have power steering , aircondition ... automatic gearing ... bud 110 HP from the first 1.6 L ,, EG " engine & 112 HP from the last MK1 1.8 L ,, DX" engine and a weight of 880 KG . This GTI`s was the worst nightmares for Mercedes , BMW & Porsche on small european village country roads.

Yes, CIS (aka Bosch K-jetronic) is sensitive to non-use. When it is working correctly and used regularily it is reliable.

why would low power make it fun to drive ? uro peons are always saying that about their garbage cars ... BuT iTs LiGhT , aNd NiMbLe 🤦🏻‍♂️🤦🏻‍♂️ yeah its also too small and underpowered

@@Hard_Right you have to understand, in Europe, cars are taxed according to engine displacement. So, for example, you buy a big car in Germany, say an '83 Passat, prepare to pay bigger bucks in taxes compared to an '83 Golf (or Rabbit) GTI. And fuel is more expensive there, on average, twice the price per liter compared to the US. And the roads there are smaller, only marginally larger than Japanese roads, especially in towns and small cities.

@@Hard_Right Haha. Typical American reaction. Remember, It is a eighties car. An camaro or mustang crashed in the first corner.

because we have roads that are fun to drive a fast good handling car on in Europe (well the rest of the entire world compared to the straight lines of the USA) @@Hard_Right

@@kristoffermangila Notice: The taxes are similar to cars with similar engines . Dosn`t matters if you bye a brand new Passat 1. 8 L or a brand new Golf 1.8 L. Similar Engine volumes similar taxes .

Sounds ideal for autocross, I’ll bet it handled like a go kart. So was fifth gear in the rabbit gti very short then?

@grantmills4184 yes, 4000 rpm at 70, red line high 80's. Great for small autocross courses. There used to be an autocross run in Eastern NC on an old runway, about 1.5 miles. The cars with higher gears would run by me.

@@schmidt28117 that sure is some short gearing! I'm sure it at least felt like it pulled fairly hard. Eastern NC seems like the kinda place a car like that would do best, with lots of mountain backroads for it to push it's handling to the limit. More of a momentum car I suppose

You have to figure those horsepower numbers aren't that bad, many of the V6s and some V8s didn't put out much more than that back then. GM's 5.7L diesel didn't make much more, although it had more torque. I had a friend with an 82 Cutlass Diesel with that V8 and I remember him being unable to keep up with a UPS truck one day. They detuned everything in the 70s to help fuel economy after the oil embargo, and as you said reduce emissions. That power level in a small, light Rabbit was probably respectable back then, maybe not so much today. Nice little cars.

@@mikelemoine4267 I didn`t know how mutch L fuel the US made GTI`s took for 100 Km distance ? I drove my GTI roundabout 100 Km with 7 L Fuel .... without driving boaring !

@@wolfgangemmerich7552 I looked it up, and the fuel economy as 9.4L/100km city and 6.25L/100 km highway and 8.1L/100km average. Car & Driver magazine tested a 1983 model and returned slightly better than the average cited above during what they called hard driving (lots of full throttle runs). They also said the US model was de-tuned slightly from the German ones and a bit heavier by 64kg (unsure of reasons), but still faster than some V8 "muscle cars" of the era. The US really de-tuned the V8 engines back then to limit fuel consumption. It was funny as they still offered multiple sizes of V8s, but the biggest and most powerful was still weaker than the smallest offering was in the 1960s before the fuel embargo of the 1970s. It was a waste of time and resources to offer all of those engines when they could have changed the carburetor and camshaft on the smallest one to have the varying performance levels. Factories don't like to change production styles I suppose, even if it means inefficiencies!

The headlights are all sealed beam so there wouldn't be any of the modern issues with them

I had an '80 Scirocco 'S'...I really miss that little car. I stored mine at my parents' house when I was in the Navy. I came back and had all sorts of fuel injection issues. I drained the tank and flushed it. Finally I took it to the local VW/Porsche dealer, and they installed a new fuel distributor. Ran fine for a while but began sputtering and stalling intermittently. I gave up and got rid of the car, damnit! It might not have had tons of power, but that was one of the funnest cars to drive into and out of corners. It had Recaro seats, if I recall. I could ramble on forever about that car.

I had the S model as well, was white with the air damn, the go fast stripes, sunroof, everything but AC which made it really easy to work on, but not so much fun when I moved to Arizona. I had it for 10 years, it was very reliable and practical. At around 280K miles it met the end of its life when it started to blow out seals on the oil filter. I pulled the pan and found the thrust washers inside. I gave it to a friend, but he did nothing with it and it got towed. I still have never forgiven him for that.@@johnhenderson3646

I had a 1983 VW GTI silver too. Such a fun car to drive. Now i have a Black 84 VW GTI : )

It’ll be for sale here soon.

You really can’t say that it’s mechanical because it’s air flow controlled.

It is mechanical because it hasn' t a computer. It is the K jetronic from Bosch.

Disagree. Keep the fuel clean and they lasted forever. Occasionally the warm-up regulators would quit, injector seals would dry out, some cars had carbon build-up problems on the intake from shit fuel. I was a VW mechanic in the 80s-90s and CIS was virtually bulletproof and easy to fix with only a few special tools. At my shop I'd have this car diagnosed, and probably running, in 30 minutes.