You are here

Is there a little trick to this?

Hi fellow holden lovers..........Can anyone tell me how to sort out a small problem with my 173. I have a bedford cf trayback that is running a 173+ trimatic. It has been running very well but now that the cooler mornings are here, when i start it up to let warm up it will eventually start to bog down and hunt then stop. I am using just a little choke just to bump up the idle a bit .She will only run properly after a few kms.Is it a carby ajustment or something more? Any help would start my days off much better........cheers John Abbott

Model: 
Engine: 
Section: 

Comments

I'm guessing the carby is icing up.
Is your inlet manifold running heater hoses through it and check thermostat opening.
Cheers....Mario

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

I think your hotspot flap valve has jammed in the "hot" position.

If you have a water heated inlet manifold, the coolant isn't flowing.

If no inlet manifold heat ...

"There's Your Trouble" ... Dixie Chicks

[http://www.oldholden... |Carburettor Ice]

T

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

T

My Shed

Holdenpaedia, they're the brakes Mate.

Have you tried replacing your spark plugs ..!!

The problem happens before the engine is at operating temperature which means the coolant running into the manifold (connected or not connected) wont be warm!

Air cleaner could be blocked, points could be closed up, but it definately wont be because the inlet manifold is being pre-heated!

Good luck!

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

"The problem happens before the engine is at operating temperature which means the coolant running into the manifold (connected or not connected) wont be warm! "

If the engine has an exhaust flap vane, it should be in the "cold"
position blowing exhaust under the carburettor right from the first
fire. If it's jammed open the exhaust will by pass the carburettor
and not heat it at all.

If the inlet manifold is coolant heated, the coolant is directed to
the inlet manifold contuinuously and before the thermostat opens. In
other words the slightest engine heat is directed to the inlet
manifold and recirculated through the engine to heat it up further.

All straight 6 Holdens had inlet manifold heat of some sort from
FX on and that includes X2's and XU-1's. Expect trouble if you disconnect it.

The one time my LJ's inlet manifold heating failed the car choked
to a stop in about 2 minutes.

T

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

T

My Shed

Holdenpaedia, they're the brakes Mate.

What he said ^^^...

Except to note that on LPG vehicles the manifold heating is totally unneccesary, and a small power improvement can be had by disconnecting it...

On my Munro (308 - petrol) the manifold heating was originally not hooked up... warmup times were looong before it became driveable...

Once I hooked up the maniflold heat, warmup times decreased considerably (10 mins down to 2-3... with no choke), and even once up to temp I noticed a marked improvement in low RPM smoothness and throttle response.

Victa.

There is a very fine line between "hobby" and "mental illness".

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

Victa.

There is a very fine line between "hobby" and "mental illness".

Hi Guys.

T said:- "All straight 6 Holdens had inlet manifold heat of some sort from
FX on and that includes X2's and XU-1's. Expect trouble if you disconnect it."

The LJ 202 XU-1 had no inlet heating at all and on the LC 186 XU-1 it was optional. In other words, provision was there if required, but it could be legally left disconnected for racing purposes under Series Production rules.

John Abbott's problem with his CF Bedford may just be a faulty thermostat (stuck open) or a simple tuning problem.

Dr Terry.

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

Agree about the thermostat sticking open. If the car has a coolant heated inlet manifold it will take too long to come up to temperature
and invite carburettor ice.

"of some sort"

See the images of coolant heated manifolds in our X2 and XU-1 pages.

T

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

T

My Shed

Holdenpaedia, they're the brakes Mate.

Many thanks guys for all of your replys. I will take all of your suggestions and help and study my beddie this weekend! I will see if i can get a picture of the manifold and heater hoses to try and nut this problem out. Cheers.John Abbott.

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

John Abbott

oo

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

He's in Perth's southern suburbs - so not a really cold place.

Cheers...Dave

"Search more, Post less"

>E-mail Me
Qute's Shed

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

Cheers...Dave

"Search more, Post less"

>E-mail Me
Qute's Shed

oo

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

Add new comment

Filtered HTML

  • Allowed HTML tags: <a> <strike> <blink> <i> <u> <br> <b>
  • Filtered words will be replaced with the filtered version of the word.
  • Lines and paragraphs break automatically.
  • Web page addresses and e-mail addresses turn into links automatically.

Plain text

  • No HTML tags allowed.
  • Filtered words will be replaced with the filtered version of the word.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Comment attachments
Files must be less than 100 MB.
Allowed file types: jpg jpeg gif png txt pdf bmp mov mp4 mp3 avi.
CAPTCHA
This question is used to make sure you are a human visitor and to prevent spam submissions. Email rusty@oldholden.com if you have a problem.
  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.