Main Menu


Welcome Guest

Welcome, Guest. Please login or register.

Login with username, password and session length

Search

Author Topic: It was running fine and then  (Read 1895 times)

0 Members and 1 Guest are viewing this topic.

Offline icanfixit

  • Trade Count: (0)
  • member
  • **
  • Posts: 107
  • Location: Maryland
  • Year_Model: 1936 170V Cab A, 1940 320 Cab B, 28 PI Rolls, 7 Lotus cars, 58 TR10
It was running fine and then
« on: May 11, 2015, 07:51:36 PM »
I have been driving the 320 around the neighborhood for the past week. All was fine until yesterday a intake valve stuck open.  I have to open the side cover up and see what has happened. My fear is a broken valve spring. Anyone know where to find then if I need them?

Thanks
Chris

Offline porin 170/220

  • Trade Count: (0)
  • member
  • **
  • Posts: 26
  • Location: Croatia
  • Year_Model: 1952_220A
Re: It was running fine and then
« Reply #1 on: May 12, 2015, 07:29:51 AM »
Hi,

You can try to ask on this address.
http://www.prewarcar.com/classifieds/ad177975.html

Here is another interesting link for you maybe.
http://www.oldtimerholz.com/referenzen/mercedes_170.html

Best regards
Porin

Offline Stephen Dietrich

  • Trade Count: (0)
  • member
  • ****
  • Posts: 693
  • Exterior Color: Yellow
  • Interior color: Black
  • Location: Pasadena, CA
  • Year_Model: 170 Da OTP
Re: It was running fine and then
« Reply #2 on: May 12, 2015, 11:57:41 AM »
I would check with Henry. He should know.  Stephen
Stephen Dietrich
1952 MBZ 170Da OTP
1952 MBZ 300 Cabriolet
1978 Porsche 911SC Targa
1962 Porsche 356B Super

Offline icanfixit

  • Trade Count: (0)
  • member
  • **
  • Posts: 107
  • Location: Maryland
  • Year_Model: 1936 170V Cab A, 1940 320 Cab B, 28 PI Rolls, 7 Lotus cars, 58 TR10
Re: It was running fine and then
« Reply #3 on: May 12, 2015, 01:47:59 PM »
I took a look inside the valve covers and did not see any obvious problems. No broken springs. The engine is compressing fuel back up through the carb. It is on a rhythm like only one cylinder.  All is good at idle till you advance the throttle or put a load on the engine. It acts like the intake valve is not closing and the compression stroke is pushing the fuel/air mix back out the intake and up the carb.

I will do a compression check next to see which cylinder it is. I am not looking forward to taking the head off again. I hope this can be an easy fix.

Chris
 

Offline icanfixit

  • Trade Count: (0)
  • member
  • **
  • Posts: 107
  • Location: Maryland
  • Year_Model: 1936 170V Cab A, 1940 320 Cab B, 28 PI Rolls, 7 Lotus cars, 58 TR10
Update Re: It was running fine and then
« Reply #4 on: May 20, 2015, 04:23:43 PM »
Cylinder 4 and 5 have 20# compression. Looks like a blown head gasket. I m going to get a custom one made. Now I just need to decide on thickness and material.

Chris