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I think it's the vacuum limiter for the EGR. From what I've read, this prevented the EGR valve from opening too aggressively an cause excessive exhaust recirculation disrupting the mixture and affecting performance, especially at idle. This is just based on research, my 81 528i does not have this de...

Thank you, sir. I ended up using a small amount of Curil T on the gasket, which is high temp and non-curing. I've never used it before, and I was basically trying to hedge my bets. Any reason this was a bad idea based on experience? If so, I can replace.

Neat and fastidious work as always, Robert. Have you mounted the compressor and all the lines yet?

PS. We see the Spal fan box in the background.

I'm reading this gasket goes on dry. The one I spent an hour and half a can of brake cleaner removing certainly didn't.

https://www.realoem.com/bmw/enUS/showpa ... Id=11_0468

What's the consensus? The blue manual doesn't mention any sealant or dressing.

If you're getting spark, and assuming the coil is OK and you're not getting a weak yellow spark, how's your fuel pressure? You might have previously stalled when the thermo-time switch shut off the cold start valve. You probably know this already, but with the engine off you can check fuel pump oper...

My car had vac leaks at the dipstick and the oilpan gasket that caused roughness like you describe, among other symptoms. I found them after I had verified no leaks in any of the hoses. I used a large-diameter length of shrink tubing around the top of the dipstick. The oilpan gasket leak was solved ...

I run Conti DWS06 225/50/16 square on E38 Style 61 wheels which are 16 x 7.5 ET20 with 15mm spacers up front (hat tip patinabeforepolish). At steering lock I get a very little bit of rubbing. Extended lug bolts were needed for the front with the spacers. New stock springs. The handling is to my liki...

Salut Remco,

I found the Hack Mechanic book "Just Needs a Recharge" VERY helpful when I renovated my A/C system. As Mike said, the system is straightforward. You'll spend most of your time figuring out fittings and hoses and then chasing leaks. It's available on Amazon.fr.

Wow, six bad injectors. That's got to be some kind of Royal Flush statistically. Glad you got it sorted out. Must have felt real good when you got that idle.

If you don't have Rob Seigel's A/C book, I really recommend it. Unless you have an OEM condenser the bracketry is going to need some work. You'll also not likely reuse an OEM fan - the current draw on an old OEM fan with original bearings is likely to be crazy-high, mine was pulling north of 25 amps...

My car is back on the road after machining the exhaust manifolds and new gaskets. It sounds better than I could have hoped for. I can't tell you what a relief this is - the clicking was a constant irritant and a constant reminder of something unsolved, and now it's gone. But it's also generally way ...

Just posted the link to one I saw on eBay in the For Sale section.

Is this a car that is new to you? Was it running well in the past for you? I had a similar problem that drove me nuts for years on my E12 that turned out to be a loose oil pan bolt hidden under the cross member, the last place I would have looked for a vacuum leak - and no oil leaks for a clue. As I...

Bravo, Robert, your meticulousness is always appreciated. Do you know if this would be the same with the AL41X on the 1979-81? Is that merely a 65-amp variant of the AL46X?

dutch wrote: ↑Thu May 01, 2025 1:45 am are you sure you don`t have an exhaust manifold leak?

I wasn't until yesterday. It's an exhaust manifold leak at number 6. Once the manifold is off I can see if it needs resurfacing or if it's just the gasket. I gotta say, that beats knocking rocker shafts off any day.