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Recently on mornings the Ranger (WL 2.5T), gives a rough idle upon starting. It starts with one turn however but runs a little rough for about a minute. Anyone experienced this before or has an idea what might be the cause? Any subsequent starts are fine with normal idle etc. This does not affect acceleration or normal functionality though so kinda has me puzzled. Could it be the primer pump on its way out?

Glow plugs

Hmmm ok. Do they have to be replaced or are these a serviceable component?

nah could be just that the engine is cold and no oil in the system.

no mention of bad starting just rough idle

did you check your fuel filters?

3stagevtec wrote:did you check your fuel filters?

Yes, the strainer was cleaned and the fuel filter changed.

lol


...Glow plugs...

I just did that for spite...

To check the glow plugs:

Get a length of electrical wire long enough to reach the battery to the fuel rail. Both of the are on the same side of the vehicle so it's not a great length.

Connect one end of the wire to the positive terminal. (To get current nah!)

With the ignition on, NOT with the engine tumbling.. well the engine could be on.. but whatever is good for you... very carefully, glide or brush the free end of the wire to the top of each glow plug.

If it sparks. It working.

Just do shock urself

dat sounds like trouble...

Easy to do once you get shock already from a car and know what to expect

Like getting shock from the distributor... Oh that hurt so much.... My arm tingled for days.

bleedingfreak,u sure its glow plugs? If they van cold starting good that means the glow plugs doin their job right? I thought the rough idle on mornigs was normal wit most of the diesel vans.

Been there...

That's why I coudl tell you is the glow plugs. But like I say you have to test it first.

my glow plugs wukkin fine...but the van initially runs rough for about 20-30 secs. is normal for the Navs to sound like an Isuzu when starting from cold. also, she belches plenty white smoke from cold start as well.

nun to worry about

bleedingfreak wrote:Glow plugs

Yup glow plugs were the culprit. Only 1 was working...

I so smart!

Having that same problem , Glow plugs are good , however , after driving and parking up , idles rough and cuts off , bypassed the hand pump and filter , van works perfect . changed the hand pump , same issue , think it could be the injector pump itself ?

Try a different service station could be you are getting water in the fuel tank, check the water trap on the filter for this telltale sign of water from the tank.

INDAVID WORKSHOP wrote:Try a different service station could be you are getting water in the fuel tank, check the water trap on the filter for this telltale sign of water from the tank.

The thing is , it works perfect once you bypass the filter and hand pump . Very confusing

Sabot wrote:Recently on mornings the Ranger (WL 2.5T), gives a rough idle upon starting. It starts with one turn however but runs a little rough for about a minute. Anyone experienced this before or has an idea what might be the cause? Any subsequent starts are fine with normal idle etc. This does not affect acceleration or normal functionality though so kinda has me puzzled. Could it be the primer pump on its way out?

Hey bro what’s your number wanna ask about this ?