Hello everyone.
I am having a problem with a clients Hyster forklift.
I wish I could give model and serial but they are sun baked off of the data plate and unreadable.
The side says HYSTER 45 and I know it had the GM 2.2L engine.
Currently the problem is that it does not want to start in the mornings without pushing the primer button on the vaporizer.
Now recently the truck was running terribly and would barely idle, hard start, and generally run poorly.
I did what I could but ultimately the carburetor had alot of wear on the throttle plate and the gas valve housing was worn out as well.
I installed a new Impco CA110 carburetor, and Model J vaporizer which are identical to what it had.
The unit runs much better now with a smooth idle and great acceleration.
However in the mornings it refuses to start without me depressing the primer button on the vaporizer and its not even cold temps here at 80 degrees in the morning.
Once it is started and running and warmed up a bit the unit starts fine on its own.
What I have noticed is it seems the fuel is not being pulled into the carburetor. When I take the fuel inlet hose off the carb and put my finger over the carb fuel inlet fitting while cranking I can feel no vacuum. I always thought the model J needed to feel some vacuum at the output to allow for fuel flow.
I am wondering now if the engine has low cranking vacuum in the morning?
Sorry so lengthy.
Thanks a ton.
Chris
Showing items 1 - 7 of 7 results.
I haven't checked the timing as the unit runs great when it starts.
Would like to get that part number for the orange model J spring though.
Just on an off chance...what is the ignition timing at?? is it per spec for this engine?
The Impco J comes in 2 different versions, one with a blue secondary spring and one with orange. The orange one requires less vacuum to "turn on". I've seen this hard starting problem when a blue one is installed when it should be orange.
Hyster # 1369572 orange spring, low vacuum Impco
# 1457964 blue spring, standard Impco
You are correct that the regulator needs to feel a vacuum for it to flow fuel. Did you install a Model J?- I've had ALOT of problems with the model J in recent years- I've been replacing them with the Cobra with good results thus far.
Check & make sure that the diaphram inside the mixer pulses up & down while the engine is cranking- you may have a vacuum leak.
******I just realized I posted in the wrong section.
Hi, its a vacuum lock off VFF30.
I have fully tested this lock off unit and it is working properly.
vacuum lock off or electric lock off?
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