Start up Smoke

[907DAVE]

No.... but it's intent was to reduce cold engine emissions...

[zeuss]

Originally Posted by 907dave

No.... but it's intent was to reduce cold engine emissions...

I'll have to check it. I'm interested to see what happens in morning withuot the chip in.

[zeuss]

Well it smoked like heck til warm again. Pulling chip did nothing different, just took it out of equation. Next questonis could the glow plugs be bad even though they tested good for them. Not sure how they tested them.

[cleatus12r]

Usually glow plugs are only tested by putting a test light to the terminals. The clamp will go on the positive battery post and the pointy end of the light will go on the terminal for each glow plug. However, this test is pretty hit-or-miss and the proper way is to check the resistance.

My friend and I were bitten by the resistance check though about a month ago. All glow plugs tested good on a cold engine. Once current was supplied to the glow plugs though, some would go open (no continuity through them and hence no heat) and he would have a hard start and rough running once it started.

[zeuss]

Originally Posted by cleatus12r

Usually glow plugs are only tested by putting a test light to the terminals. The clamp will go on the positive battery post and the pointy end of the light will go on the terminal for each glow plug. However, this test is pretty hit-or-miss and the proper way is to check the resistance.

My friend and I were bitten by the resistance check though about a month ago. All glow plugs tested good on a cold engine. Once current was supplied to the glow plugs though, some would go open (no continuity through them and hence no heat) and he would have a hard start and rough running once it started.

So what is the best way to check them. I checked them at the plug after driving 50 miles. I hate to say it, but glow plugs are the only thing that makes sense to me for this much white smoke. If I pull them, is there a chance they might be shorter from being burned so much. Thanks so far and please keep helping. I in jam and need truck.

[cleatus12r]

They don't get "shorter". I don't mean to offend if I read that wrong.

I assume you meant "shorted". They do "wear" electrically which is the reason they don't last forever. Your truck has about 120K right? If they're the stock glow plugs (didn't read about a replacement in your original post) then I would definitely just do them because they have 120K on them.

I NEVER tell someone to throw money at something, but glow plugs are really important to the starting and first couple minutes of drivability so it's not a bad idea to do them at 120K miles. You might consider replacing the small harness under each valve cover while you're there.

[zeuss]

Originally Posted by cleatus12r

They don't get "shorter". I don't mean to offend if I read that wrong.

I assume you meant "shorted". They do "wear" electrically which is the reason they don't last forever. Your truck has about 120K right? If they're the stock glow plugs (didn't read about a replacement in your original post) then I would definitely just do them because they have 120K on them.

I NEVER tell someone to throw money at something, but glow plugs are really important to the starting and first couple minutes of drivability so it's not a bad idea to do them at 120K miles. You might consider replacing the small harness under each valve cover while you're there.

On some of the old trctors the tips would actually get shorter, thus reducing the area of heat on plug. And yes I am kinda ignorant about diesel stuff, so thanks for being kind to me. I am probably going to stick plugs in. Like I said, injectors just dont make logical sense to me, but plugs do.