Search found 176 matches

by 528i-1981
Wed May 27, 2020 6:43 am
Forum: Tech Forum
Topic: starting issues
Replies: 6
Views: 64

Re: starting issues

L-Jet really hates vacuum leaks. The stout and reliable M30 goes from daily-driver mode to total basket case, and without ODB it's all trial-and-error. I'm really impressed by your diligence on the harness. I thought that could have been the problem, too. But as Lock once wrote, there are (usually) ...
by 528i-1981
Sat May 23, 2020 7:15 am
Forum: Tech Forum
Topic: starting issues
Replies: 6
Views: 64

Re: starting issues

Well, it depends on what else has happened with the throttle body screw and the mixture. As I was playing with mine trying to get it right, I was pulling levers all over the place and the engine behavior wasn't making any sense. It could be very lean from false air and disconnecting the temp sensor ...
by 528i-1981
Fri May 22, 2020 7:06 pm
Forum: Tech Forum
Topic: starting issues
Replies: 6
Views: 64

Re: starting issues

You may have a big vacuum leak somewhere. Take off the intake hose between the air cleaner and the AFM and put an unlit propane torch in the AFM and see if it starts and runs better. If yes, go on the hunt with a can of starter fluid. I was having bedeviling problems recently and finally found a vac...
by 528i-1981
Mon May 18, 2020 5:57 am
Forum: Tech Forum
Topic: Squeak in Rear Suspension
Replies: 6
Views: 249

Re: Squeak in Rear Suspension

I removed both rear shocks and replaced the mounts, rubbers and gaskets. Also inspected and lubricated the trailing arm mounts and swaybar mounts. Still squeaking with full force and vigor. What I noticed is that the squeak diminishes over the course of a drive. I'm suspecting broken spot welds behi...
by 528i-1981
Sun May 03, 2020 1:01 pm
Forum: Tech Forum
Topic: 1980-83 e21 320i, oxygen sensor question
Replies: 5
Views: 116

Re: 1980-83 e21 320i, oxygen sensor question

The O2 sensor produces an electrical signal, so it has to be processed somehow. This article mentions a controller of some kind that modulates fuel pressure through a valve that appears to be especially for K-Jet with lambda control : http://cleanflametrap.com/kjetControlller.htm I don't know much a...
by 528i-1981
Sat Apr 25, 2020 8:52 am
Forum: Tech Forum
Topic: Engine Ground - 1974 530i
Replies: 4
Views: 156

Re: Engine Ground - 1974 530i

There are probably lots of options, but I attached mine to one of the bolts holding the bracket for the throttle bellcrank on the block . It's easy to access. The other end I connected to the wheel house bracket that holds the coolant overflow tank (and the combo relay on my 81). Check for a good gr...
by 528i-1981
Thu Apr 23, 2020 9:15 pm
Forum: Tech Forum
Topic: I need somebody to sell me pistons or a full M30!!!
Replies: 11
Views: 372

Re: I need somebody to sell me pistons or a full M30!!!

And thus the 532i was begotten.
by 528i-1981
Thu Apr 23, 2020 9:02 pm
Forum: Tech Forum
Topic: L-jet fuel rail / injector rebuild questions
Replies: 2
Views: 107

Re: L-jet fuel rail / injector rebuild questions

I just replaced my injectors and short hoses and used clamps on both ends (injector and rail). If you use the right size clamps, high quality fuel hose and tighten them correctly they will not make the hoses more likely to leak. The last thing you want is high pressure fuel spraying directly onto yo...
by 528i-1981
Tue Apr 21, 2020 6:46 am
Forum: Tech Forum
Topic: Squeak in Rear Suspension
Replies: 6
Views: 249

Re: Squeak in Rear Suspension

Thanks Lock. When I replaced the shocks last year I replaced the front mounts but cheaped out and reused the rear mounts. I've ordered new ones along with the rubber mountings for the shock rod. When I'm replacing the mounts I'll have a close look at everything, including the trailing arm bushing an...
by 528i-1981
Sat Apr 11, 2020 8:10 am
Forum: Tech Forum
Topic: Squeak in Rear Suspension
Replies: 6
Views: 249

Re: Squeak in Rear Suspension

The subframe rubber mounts are pricey, so I'm hoping they're OK. It could be trailing arm bushings, or the shock mounts. My understanding is that the bushings should create more of a creak/groan than a chirp/squeak. The shock mount seems to place the noise right at the rear seat. Any experiences wit...
by 528i-1981
Fri Apr 10, 2020 8:39 am
Forum: Tech Forum
Topic: Squeak in Rear Suspension
Replies: 6
Views: 249

Squeak in Rear Suspension

There is a long-lived squeak that I've always assumed was a rear seat issue, but after removing both parts of the rear couch it's evidently something different. The shoulder bracket for one of the rear seat belts was squeaky, but with that fixed there's another squeak that is originating from the re...
by 528i-1981
Sun Apr 05, 2020 6:24 pm
Forum: Tech Forum
Topic: ballast resistor with conventional ignition
Replies: 12
Views: 761

Re: ballast resistor with conventional ignition

Wow. This is the stuff nightmares are made of. Kudos for your sleuthwork.

On all but the most routine maintenance tasks, I've taken to photographing everything before I touch it, and religiously consulting the pix when putting things back together. That would not have helped me here.
by 528i-1981
Thu Apr 02, 2020 8:06 pm
Forum: Tech Forum
Topic: 1976 BMW 530i "Eleanor" rebuild project
Replies: 64
Views: 4128

Re: 1976 BMW 530i "Eleanor" rebuild project

Genius use of earplugs, Mike.
by 528i-1981
Thu Apr 02, 2020 6:30 am
Forum: Tech Forum
Topic: LS swap
Replies: 3
Views: 184

Re: LS swap

One reason BMW liked to mount the M30 far forward was so the weight would pin the nose of the car to the ground at high speed. Many cars get very light in the front end at high speed (over 100 mph). I had the hood off my E12 recently and at 80 mph the front end was getting noticeably lightfooted wi...
by 528i-1981
Wed Apr 01, 2020 8:24 pm
Forum: Tech Forum
Topic: M30B35 Swap
Replies: 10
Views: 390

Re: M30B35 Swap

I've read of M70/73 V12 swaps into E34s and E39s, and even an E30, but never an E12. Do it Mike! I wouldn't want to do the plug changes, but it would look great!