Starting & Water Draining HELP
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Joined: Dec 2002
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Starting & Water Draining HELP
Vehicle is: F350 1990 7.3 diesel.
There seems to be a conflicting point of view as to how long the fuel filter should last, I partly understand that the light comes on when there is an overload of water in the filter, does this mean the water is drained off or should the filter be changed at the that time.How
do you drain the water from the filter chamber
Another question I would like answered if possible is:
Starting in the cold, mine has not got the heater in the block, and
I understand that makes it difficult to start, I have just fitted 8 new Glow Plugs, when I go to start I wait for the light to go out, I
then hear clicking, should you attempt to start at that point or after the clicking has stopped, also should you use any throttle
any any point to assist starting?.
I find it seems to fire only when I have about half throttle.
After two attempts of about 15 to 20 seconds, I turn the key off
and try again it seems to start after another few seconds, with half throttle, when it does it really smokes on starting, does this all sound right?
There seems to be a conflicting point of view as to how long the fuel filter should last, I partly understand that the light comes on when there is an overload of water in the filter, does this mean the water is drained off or should the filter be changed at the that time.How
do you drain the water from the filter chamber
Another question I would like answered if possible is:
Starting in the cold, mine has not got the heater in the block, and
I understand that makes it difficult to start, I have just fitted 8 new Glow Plugs, when I go to start I wait for the light to go out, I
then hear clicking, should you attempt to start at that point or after the clicking has stopped, also should you use any throttle
any any point to assist starting?.
I find it seems to fire only when I have about half throttle.
After two attempts of about 15 to 20 seconds, I turn the key off
and try again it seems to start after another few seconds, with half throttle, when it does it really smokes on starting, does this all sound right?
Posting Guru
Joined: Feb 2001
Posts: 1,465
Likes: 2
From: Indianapolis
Starting & Water Draining HELP
There should be 2 lights on the dash (somebody correct me if I'm wrong about this), 1 light for "water in fuel" and another for "change fuel filter," that is what the black sending unit on the fuel filter header is for -- when the injection pump draws enough of a vacuum on the filter, that sending unit activates a light on the dash. There is a brass thumb wheel on the bottom of the fuel filter that you can turn open to drain the water off.
Your truck "should" start with no throttle and you can start cranking as soon as the wait to start light goes out. The sooner you begin cranking after the wait to start light goes out, the hotter the glow plugs will be.
Your engine is the old IDI engine. These engines had expansion plugs for freeze plugs except the one all the way to the rear (I can't remember if it is the left side or the right side) which is fitted with a block heater. Unless somebody has removed it and installed a welsh plug, you have a block heater. Look for the freeze plug hole that is different from the others. (An expansion plug is a round disc with a dimple right in the center.)
Your truck "should" start with no throttle and you can start cranking as soon as the wait to start light goes out. The sooner you begin cranking after the wait to start light goes out, the hotter the glow plugs will be.
Your engine is the old IDI engine. These engines had expansion plugs for freeze plugs except the one all the way to the rear (I can't remember if it is the left side or the right side) which is fitted with a block heater. Unless somebody has removed it and installed a welsh plug, you have a block heater. Look for the freeze plug hole that is different from the others. (An expansion plug is a round disc with a dimple right in the center.)
Posting Guru
Joined: Sep 2002
Posts: 1,897
Likes: 0
From: Northeastern Pa - USA
Starting & Water Draining HELP
Hello Baron,
Joe is correctamundo in his explanation in the starting of the 7.3 IDI. Sometimes, I have found that it would be necessary to cycle the glow plugs 2 times to get the engine to start (depending on the temperature). the heat they make will be disipated in the cylinders during the cycling of the glow plugs.
As far as the water in the fuel filter base,,, as long as there is not a large amount of water drained out, when you do drain it, i wouldnt worry too much about changing the filter, BUT ,,, if you happen to pick up a bad tank of fuel, and the weather is cold, I would change the filter. that is better than getting stuck in the middle of no where without the paddle, i mean filter.
Joe is correctamundo in his explanation in the starting of the 7.3 IDI. Sometimes, I have found that it would be necessary to cycle the glow plugs 2 times to get the engine to start (depending on the temperature). the heat they make will be disipated in the cylinders during the cycling of the glow plugs.
As far as the water in the fuel filter base,,, as long as there is not a large amount of water drained out, when you do drain it, i wouldnt worry too much about changing the filter, BUT ,,, if you happen to pick up a bad tank of fuel, and the weather is cold, I would change the filter. that is better than getting stuck in the middle of no where without the paddle, i mean filter.
