Manitou CG-18 S1:
Forklift misfiring/back firing after Propane Regulator/Vaporiser clean out.

I have a 2010 Manitou CG-18 S1 forklift fitted with a Nissan Engine. The forklift was running fine and then started to cut out and idle/run erratically.
The forklift runs on LPG Bottles via the following:

Tecalemit 3 way Electrovalve
Impco Cobra Vaporiser/Regulator, Impco VFF30 Vacuum and Fuel Lock Off/Filter
Impco External Cartridge Filter (F-830).

The Carburettor is a Impco CA55 173-3.

The Carburettor, Vaporiser/Regulator and the Vacuum and Fuel and Lock Off/Filter Assembly
and External Cartridge Filter (F-830) have all been stripped down, cleaned and rebuilt.

The External Cartridge Filter (F-830) housing was stripped and found to be empty.
There was no fuel filter present ?
Is this fuel filter required on a forklift running LPG ?

All rubber hoses were clear of foreign matter as was the Tecalemit 3 way Electrovalve that connects to the Vaporiser/Regulator.
What is this for ?
Recirculating unused LPG into the inlet manifold ?

No damage was found on any parts, although their was some dark grey dust and metallic/metal particles over all the internals and choking up the Vacuum and Fuel and Lock Off/Filter assemblies.

What could these be ?

Dirty LPG ?

This has all been refitted to the forklift.

Since refitting these parts the forklift will not run properly when you put load on on engine with the accelarator pedal whilst stationary.
The engine backfires and then cuts out.

The engine will idle, albeit sounding like it is misfiring which seems to clear when accelarator pedal is pushed whilst the forklift is stationary and when the pedal is released the engine backfires and cuts out.

Could this be due to a lean LPG fuel mixture ?
Weak spark, distributor timing ?

The rotor arm, spark plugs, HT leads, throttle cable, and all vacuum hoses have been checked found to be in a servicable order.

Ideas welcome as I am at my wit's end with the **** machine.

Please see attached pics.

Regards

Richard
  • Posted 24 Oct 2021 06:18
  • Discussion started by Richard_Harper
  • United Kingdom
Manitou CG-18 S1
Showing items 1 - 1 of 1 results.
did you get the issue resolved?
yes i can help
  • Posted 7 Jan 2022 19:56
  • Reply by iowagold
  • Iowa, United States
Thanks Paul in Iowa
http://www.poustusa.com

Having trouble using the Discussion Forums? Contact us for help.

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

PREMIUM business

VETTER Forks, Inc.
The world's most comprehensive product range as well as the most intelligent sensor fork for more safety and efficiency.
Global Industry News
edition #1130 - 1 June 2023
You might notice a few changes in your newsletter and on our website. That’s because we updated the format last week to make it even easier to read – and to... Continue reading
Upcoming in the editorial calendar
SMART ATTACHMENTS
Mar 2023
DRIVERLESS/AUTOMATED MATERIALS HANDLING
Apr 2023
Latest job alerts …
Brisbane, Australia
Louisville, KY, United States
Waco, TX, United States
Decatur, IL, United States

PREMIUM business

Tailift Material Handling USA Inc
Part of Toyota Industries Group - Leading manufacturer of High-quality machines.
Upcoming in the editorial calendar
SMART ATTACHMENTS
Mar 2023
DRIVERLESS/AUTOMATED MATERIALS HANDLING
Apr 2023
Svetruck 1260-30
Balling, Denmark
Used - Sale
Toyota 40-8FD70N
Hornweg, Netherlands
Used - Sale
Movers & Shakers
Natasha Solano-Vesela Natasha Solano-Vesela
global airfreight director - perishables, Hellmann Worldwide Logistics
COO, Clark Material Handling Company
BDM, Clark Europe
CEO, DHL Global Forwarding