mk2

Whats the difference? Do i want one too?

Nah, the 1.7 always takes ages to warm up. With or without EGR. The reason it takes ages is because it is so efficient, where most power goes to the wheels or as heat down the exhaust pipe. The beauty of a DI diesel is that you have a thin boundary layer of air between the piston crown, the cylinder head, the bores and the ball of fire expanding, generating pressure to run the engine. The thin layer of air blocks the heat getting into the engine. Air's a pretty good insulator. The quick way of disabling EGR is by disconnecting the vacuum hose on the choke flap. Then block the hose. Keeps the air supply clean. But you also need to do the same to the EGR valve, to stop the exhaust gases getting through. EGR is disabled over about 2200 RPM.

Cough cough! Splutter. Mk4 golf? Biggest piece of lumbering german junk ever. I have one. Ok, so it's comfy. That's where the good news stops. So so many serious design flaws. So much to go wrong or OEM stuff that keeps going wrong. And heavy. And not economical. And does not handle. Also true for the R32 too.

LOL! Excellent! Very funny! @mscherryviolet , you've gotta laugh at that....

Yeah, us lupo/arosa people are an elite group who strongly help others within our clan... (And there are more of us than them). Picture a street full of Lupos turning up blocking the area off. Nowhere to run.... post a few pics inside and out of your canary

Don't get ripped off buying crank sensor... they are nothing more than a steel magnet with some wire wrapped round it. Priec should,be about £15. Like @Rich says they can just get crud on the end. But the other reason they fail is because the magnetism gets lost if you know what i mean. A ghetto fix is to move it very slightly closer to the crank by removing some of the flange mounting plastic- but only a tiny amount, like half a millimetre. Google how they work....

Yeah, and i reckon (after only a few hours of searching so far), that the 1.7 SDI engine is probably the smallest direct injection diesel, without a turbo anywhere. Ever. There are smaller and older diesel engines from other manufacturers, but always indirect (with a swirl chamber), or with a turbo. So I'd say it's a bit special. All new diesels come with turbos or if NA, start around 1.9. People with SDIs always whinge that they don't have enough power. I've never had a problem and I'm quite brisk on the road. I'm a Mk2 golf driver after all. If you're not cornering on two wheels, you're taking the corner too slow.... On a level motorway, i easily cruise at around 80 with a very light right foot, maybe only 25% throttle/torque demand. Added benefit of such a small swept volume is that the scavanging efficiency goes right up. I wish there were a straight six 1.2L diesel DI engine out there. It'd be amazing. BMW got close a few years back. I've rebuilt an SDI diesel pump, and the thing is completely electronically controlled (injection quantity and timing). But is still uses the tried and tested mechanical pump tech from yesteryear, which is what makes it so unbelievably reliable. My only gripe is that i think the timing sense injector gets very noisy as it ages. Haven't found a solution to that just yet. Tap tap tap, just like tappets. Irritating.

We're up to about 15 now by my reckoning. need just a few more takers. Arosa vs Lupo side profile pics. Not a lot of difference from the side....

Oh yeah baby. I have two SDIs and a spare engine... I did 130 miles to Dover and back yesterday, so a total of 260 miles, mostly motorway and doing 'average' of about 70 the whole way. Best bit, only used 15 litres of diesel, which works out to about 80mpg. Beat that, any new generation blue or green spec car! Yup, i just love the SDI engine. Ok, so i have gas flowed them, deactivated the EGR and diverted the breather fumes, but still i think standard car should be able to get close to that. 3 pot four stroke engines are just plain wrong. Otherwise i'd have gone for one of them.

I've noticed on my SDIs, there are tiny little paint colour spots between the bleed pipes on each diesel injector. On one car they are green, the other yellow and on two spare sets I have white and also light blue. I have a hunch that they are flow matched at the factory. The lift or pressure when they open has been measured on each injector during production and then they've been colour binned? Does anyone know what each colour means? When you use diagnostics to read the idle injection amount trimming, it may say -0.2 0.0 +0.5 -0.3 in milligrams of diesel (the ECU obviously averages out the amount to be zero). The differences by my reckoning are the small variations in the injector opening pressures. From my experiments, I've noticed that you can remove the shim in an injector to up the pressure at which it opens. When I mixed colours, the ECU really didn't like it- I got readings like -2.1 -0.3 -1.2 3.6 where the 3.6 injector was a yellow one in a batch of greens. It ran rough at idle. So, is that all it is? Just a matched set? Begs the question, which colour gives the biggest punch....? Which colour for which pressure? Or is it flow? Just a wild guess right now.... Has anyone ever got a straight result of zero across the board? I'd guess that it would be the same for AHU and 1.9 engines with turbines (all non common rail, non PDI systems, with a timing sensor on one injector).

My S spec only has leccy windows, lowered suspension, tilt seats, ali wheels, opening back windows and locks.

Improv means engineering spirit is alive and well. Engineering design is improv after all. Using and improving what was there before

Just thinking of a way to boost the numbers so we can get these things made... calling all arosa owners....

Was it a special option? When you get ABS in an SDI, did any other 'things' get tacked onto the extras list? Curious.

I must be thick... isn't the side profile of an Arosa the same as Lupo. Can't really make out much difference in the headlights from the side especially in miniature.

But you're the master of improvisation...

Oddly enough, i like yank chocolate (no innuendo please!). Reeses peanut butter cups. Mmmmm. strange rules in places like arizona. You can have a gun on your passenger seat, but any sign of a kinder egg, you'll be arrested!

Welcome to club lupo SDI and Gti are the best Lupos, so good call. never seen one with ABS, but I'm sure it was an option. only suggestion is to disable the egr system. pedal creak could be pedal box. They do creak just before they let go. The rest position of the pedal is the give away- if going or gone, it's lower than the brake pedal at rest. check gearbox. Flush and refill. lube gear linkages. not a lot else really. Very reliable, economical car.

That hose flange costs pennies- like £3 from ECP or someone. But you can ghetto fix it ( @Skezza 's favourite method) using some stixall. Clean it well and dry before you do it though... whirring could be leaves in the alternator or a rattly loose cam belt cover. Usually something plastic in the engine bay? It's worth tracking it down though just in case something potentially serious.

Ok, enough of this carp. I can't stand senators. Ugliest modern era car by a mile. Give me something like a 750iL E38 please. Proper car.

Nah, where the 4 police tracker antennae fit.... but given the age, lots of additional ventilation too. Helps rid the condensation in this cold weather.

I might have, especially with fluorescent jam sandwich stripes... very comfy car. The 4 little roof holes are annoying though.

Everyone knows I'm 76. Why am i always complaining about my back and knees....

My guess is that is due to kids... kids and cars don't mix. In fact from what i've been told, kids and nothing mixes well. Everyone i know with young 'uns have the backs of their seats kicked in, chocolate and various susbstances mashed into the headliner, carpet, seatbelts, cloth and door handles covered in icky goo... bring back vinyl for families!

We haven't seen a pic of the inside of your fresco car for a while @mscherryviolet.... last totalled one had some excellent arty additions all over the place in the form of cherry stickers and a funky headliner. Or have you gone all sensible on us