Dodgy diaphragm?

[Iain T]

The new diaphragm from Burlen arrived today in its Zenith bag, covered in baby talc and gossamer thin. A few months ago when the bought the service kits from Burlen the diaphragms were loose in the boxes and quiet deformed, perhaps they were not new? The little voice in my ear said at the time 'don't fit them' but I didn't know how old the ones in the carbs were so I went ahead.....bad decision. Today I fitted the new diaphragm to the piston that was holding off the bridge and all's well, drops to a clonk and stays there. I'll be talking to Burlen tomorrow to see if I can blag another one out of them because to my mind it was their bad quality part that's at fault. The 2 from Chic should be here tomorrow and I'll compare with the new Burlen part.

Now I only have to refit the choke mechanism and attempt to start the engine (with lots of cranking) then adjust.

On another note has anyone any experience fitting 7B needles on a Vit MK2 with Phoenix 6-3-1 exhaust, gas flowed head and hotter cam? The carbs currently have 6AC fitted. 

Possibly sorted one problem but my modern BMW 4 series has developed a grumbling road noise from the front end, I've had it 4 wheel aligned, new horrible Pirelli run flats (it's done 40k miles), known service widget problem on the steering and finally today new wheel bearings.....nothings worked. I will take it somewhere else to see if the front end alignments are ok and the tyres not scrubbing, I can't see any wear as I now rarely use the car. Plus the cruise control warning light that has been coming on almost since I bought the car new has now been diagnosed by a BMW specialist as the SZL unit and cost several hundreds of pounds!!!! However the BMW dealers could never find the problem...'cos it was under guarantee and it would be at their cost!!! Lying cheating BMW main dealer buggers.

I feel much better after that rant modern cars are just too damn complicated.

Time for some rum!

Iain

[Pete Lewis]

if you think tyre noise /tread impact noise  try over inflating by 10psi   if the noise changes its your tyres 

any muppet in techy garage should have tried that its 

a very normal  dinosaur way to help identify 

Pete

[Colin Lindsay]

1 hour ago, Iain T said:

Possibly sorted one problem but my modern BMW 4 series has developed a grumbling road noise from the front end, I've had it 4 wheel aligned, new horrible Pirelli run flats (it's done 40k miles), known service widget problem on the steering and finally today new wheel bearings.....nothings worked. I will take it somewhere else to see if the front end alignments are ok and the tyres not scrubbing, I can't see any wear as I now rarely use the car.

Had a serious droning noise on my Mondeo recently; had the bearings checked but not at fault however the noise especially at low speed was terrible; really loud even audible over the stereo. The car sounded like a lawnmower up to about 40mph after which it died down a bit.

Took it to a mate's Tyre Depot and he advocated changing the tyres over from side to side so that they still rotated in the same direction but the outside of drivers was now the inside of passengers... took him 10 minutes max and cured the problem instantly. He says it's a common problem with Audis (didn't mention BMW!) due to uneven tyre wear. Might be worth a try on yours.

[Iain T]

Pete, I'll try that tomorrow. 

I can feel the road rumble through the footwell and steering wheel. Only slight but when new the car was very smooth and quiet. I've had several BMW's and normally no trouble but this one has had two recalls and loads of niggling problems. The tyres have only done 1500 miles but I will be going back to tyre company.