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Engine Specific Info and Questions => IDI Engine => Topic started by: nathanva on October 08, 2009, 03:41:58 pm

Title: "smoke screw"
Post by: nathanva on October 08, 2009, 03:41:58 pm

hello Im new here as well as to diesels and recently i picked up a 97 jetta with the AAZ.  I wanted to turn the smoke screw up a little on the injection pump, but it was rusted so i ended up taking out the screw as well as the nut to get them loose from eachother. than i put it back in to stock and than an additional 1/4 turn. Now the car will not fire up. Does the pump have to be primed? Any help is appreciated. Thanks

Title: Re: "smoke screw"
Post by: nathanva on October 08, 2009, 06:39:37 pm

sorry i meant the max fuel screw

Title: Re: "smoke screw"
Post by: rallydiesel on October 08, 2009, 06:43:16 pm

Just keep cranking. You let some air into the pump when you took the screw out.

Title: Re: "smoke screw"
Post by: rabbitman on October 08, 2009, 08:31:31 pm

Turn it in a bit more until it fires up, holding the go pedal to the floor might help too. Get ready to shut it off 'cause it might rev out of control, you'll then have to adjust the idle.

Title: Re: "smoke screw"
Post by: nathanva on October 09, 2009, 05:51:31 am

alright thanks guys. the battery is recharging right now than ill go try it again

Title: Re: "smoke screw"
Post by: booneylander on October 09, 2009, 06:11:06 am

Also make sure you didn't accidentally short out the circuit to the fuel shut off solenoid if you tried to turn the locknut on the screw while the engine was running and touched the top of the solenoid with your wrench. Don't ask me how I found that out  ::)

Title: Re: "smoke screw"
Post by: vanbcguy on October 09, 2009, 07:00:42 pm

Quote from: booneylander on October 09, 2009, 06:11:06 am

Also make sure you didn't accidentally short out the circuit to the fuel shut off solenoid if you tried to turn the locknut on the screw while the engine was running and touched the top of the solenoid with your wrench. Don't ask me how I found that out  ::)

Soooo been there... Was adjusting it with the engine running and it just STOPPED.  D'oh...

The older cars don't have a fuse on that wire, so the consequences of shorting it out are quite a bit more severe...

Title: Re: "smoke screw"
Post by: macka on October 10, 2009, 05:58:51 am

booneylander, we've all had "fun" with repairs that make us use the 4 letter word bank.

Title: Re: "smoke screw"
Post by: Jay on October 10, 2009, 01:49:52 pm

Quote from: macka on October 10, 2009, 05:58:51 am

booneylander, we've all had "fun" with repairs that make us use the 4 letter word bank.

I think we've probably added to the 4 letter word dictionary  ;D