E34 M5 no compression in Cyl. #3

[Boxer2]

The guy that told me it had no compression is from what I have heard a certified BMW tech, he runs a garage that works mostly on your average car and has a few BMW clients as well.. He claims it has no compression based on the sound when you turn it over.

I have not done a compression test or a leakdown test because the tools I have are not long enough to go down into the head, nor do I have the right plug style adaptor.

I don't mind waiting a bit for the job to be done, as long as it's done right. Im willing to have the car brought over on a flatbed....

Rudy, do you think your dad would take on this job for me?
If so when can I have the car brought to your place?

Mark, when do you think your guy would be able to do this?
And where is he located?

[MarkD]

Originally Posted by Boxer2

Mark, when do you think your guy would be able to do this?
And where is he located?

http://www.411.ca/business/Ontario/R...e/4694478.html


Advanced Knowledge Automotive
346 Newkirk Rd, Unit 16
Richmond Hill, ON, L4C3G7

905-883-4BMW advanced.knowledge.auto@hotmail.com

Ask for Trevor Hayes

I know he can do it! And faster than almost anyone else. He was the shop foreman at Open Road and T&C in the past, and is a BMW master tech.



Mark

[marek]

You know that buying the compression gauge will be cheaper than the tow (unless you have CAA).
1. Did you pull the plugs and see what they look like?
2. Try spraying the wires with water and check for arcing (best done when it is dark outside)?
3. Unplug the injector on the same cylinder and see if that makes a difference
4. What does your cap and rotor look like?
5. Did you see if you actually have spark going to that cylinder?

[MarkD]

From his previous responses it appears there is a spark on #3 and he says wires are good.

[Boxer2]

Originally Posted by marek

You know that buying the compression gauge will be cheaper than the tow (unless you have CAA).
1. Did you pull the plugs and see what they look like?
2. Try spraying the wires with water and check for arcing (best done when it is dark outside)?
3. Unplug the injector on the same cylinder and see if that makes a difference
4. What does your cap and rotor look like?
5. Did you see if you actually have spark going to that cylinder?

I do plan on buying the proper compression gauge, but I still definitely want someone that knows these motors to have a look at the issue...and yes I do plan on using CAA for this.

All plugs have been pulled, and check out ok....no difference with the injector plugged in or not, cap and rotor look new.

[Boxer2]

Originally Posted by MarkD

http://www.411.ca/business/Ontario/R...e/4694478.html


Advanced Knowledge Automotive
346 Newkirk Rd, Unit 16
Richmond Hill, ON, L4C3G7

905-883-4BMW advanced.knowledge.auto@hotmail.com

Ask for Trevor Hayes

I know he can do it! And faster than almost anyone else. He was the shop foreman at Open Road and T&C in the past, and is a BMW master tech.



Mark

thanks for the contact info, I will be in touch with him in the next few days to see what he can do.

[TEUTONICFOOL]

[quote]no difference with the injector plugged in or not

did u check if there is power to the #3 injector?? how long had the car sitting?? when was the last time u run the car in all 6 cylinders??

[Boxer2]

There's definitely power going to the injector....I just bought the car about a month ago, and I think it had been sitting since December....There was a new cap, rotor, sprk plugs, and wires put on in Nov 2010, and also looks like it passed an e-test in May 2010, so I'm assuming it was running on all 6 cylinders

[njansenv]

I checked my compression on my S38 cold after sitting for a LONG time, and discovered that Cylinder 3 was 90psi while the rest were ~170-180. It fired right up, I ran it for about 15-20 seconds, and when I rechecked it, cylinder 3 was back up to 175. Sitting does funny things...

[JINT]

you can check the compression rings easily. Remove the plug, put a little bit of oil into the cylinder, connect the compression hose, if it's the rings the oil should seal them and the compression should go up ones you run the test, if the compression doesn't go up, than it's a leaky valve, or head gasket.

[Boxer2]

turns out mine had a burnt valve, now the head is getting a rebuild and doing the clutch at the same time while the motor is out....hoping to get her rolling again soon

[MarkD]

Originally Posted by Boxer2

turns out mine had a burnt valve, now the head is getting a rebuild and doing the clutch at the same time while the motor is out....hoping to get her rolling again soon

I hope you like the service there, my cars do!

[Boxer2]

Originally Posted by MarkD

I hope you like the service there, my cars do!

I'm happy so far, Trevor seems to know his stuff, thanks again for the referral....can't wait to pick up the car and put it through it's paces