Truck Starts Hard at Times

[towman]

they used to be called chasis ear, worked with a guy that had one, dd help fix a couple of noises, and he did pay big money for his

 

[oneluckypops]

It looks like they are upwards of 1k online, but I am reading about a guy building his own for 35 bucks.

The only thing cooler than the smoke machine I played with was this box that had a shitload of alligator clips that were microphones. You could put them on different parts and run the wires into a switchboard you keep in the car. There was a dial you could turn to different microphones so you could locate a sound.

You just drive around with headphones on listening to stuff until you find your problem.

Dont hold out on us give us the link for the 35 dollar smoke machine.

 

[davbell22602]

Whats that link. I need a smoke tester.

 

[davbell22602]

I found this on making a evap smoke tester. http://www.dsmtalk.com/forums/showthread.php?t=216701

 

[davbell22602]

Hey Pops,

When we tested the fuel pressure last week it took 1 second to 1.5 seconds to bleed off when turning the on and off.

So far everyones telling me its spider injectors on CFI system. If so putting the MFI conversion kit on it.

 

[89Suburban]

I found this on making a evap smoke tester. http://www.dsmtalk.com/forums/showthread.php?t=216701

That's pretty neat.

 

[oneluckypops]

Hey Pops,

When we tested the fuel pressure last week it took 1 second to 1.5 seconds to bleed off when turning the on and off.

So far everyones telling me its spider injectors on CFI system. If so putting the MFI conversion kit on it.

well I wouldnt spend the 300 dollars on the conversion yet. If your pressure is bleeding off that fast then you defintly have a Problem. Now with that said an HONEST tech is not going to assume that it is the Spider, But instead is going to TEST the system.

3 things that it COULD be are:
1. Spider assy.
2. Fuel Pressure Regulator
3. Fuel Pump ( Faulty check valve).

If It was my customers Truck I wouldnt do anything to it with out running an Injector Balance test, and Testing for the check valve to be leaking.

If you have all data then you should be able to research the correct ways for testing each of those things listed.

 

[davbell22602]

well I wouldnt spend the 300 dollars on the conversion yet. If your pressure is bleeding off that fast then you defintly have a Problem. Now with that said an HONEST tech is not going to assume that it is the Spider, But instead is going to TEST the system.

3 things that it COULD be are:
1. Spider assy.
2. Fuel Pressure Regulator
3. Fuel Pump ( Faulty check valve).

If It was my customers Truck I wouldnt do anything to it with out running an Injector Balance test, and Testing for the check valve to be leaking.

If you have all data then you should be able to research the correct ways for testing each of those things listed.

The teacher read the scan tool and said everything was reading/showing ok.

 

[oneluckypops]

The teacher read the scan tool and said everything was reading/showing ok.

LOL then I might consider thinking about getting a new teacher. Only thing the scanner is used for there is the balance test, which in my experience very few people actually take the time to do it right.

 

[davbell22602]

Whats this crap that GM sent out to the techs about regapping the plugs from .060 to .040 to save the life of the ignition module. Is that true?

 

[oneluckypops]

Whats this crap that GM sent out to the techs about regapping the plugs from .060 to .040 to save the life of the ignition module. Is that true?

I very seriously doubt that this is true. Reason bein is that the plugs are PLATINUIM and you do NOT adjust the gap on them, If you try to you will most likely break the platnium off of it.

 

[WHEELMAN]

IS THIS THE 350R VORTECH...WITH THE SPIDER CRAP AND THE CRAB CAP ON THE DISTRIBUTOR..WELL I HAVE WENT THROUGH SOME CRAP WITH MIND..OVER THE YEARS SINCE 2005..I CHANGED THE CAP AND ROTOR-COIL-AND STILL THE THING WOULD NOT START.but now and then..if it was wet out.it would not start.the pump got weak.the pump has to be on the money..i just got one off of amazon.com..got that put in..temp sensor was bad...but i found out..you can not use the after market caps.i went to the dealer..and bought there cap-that knocked out a lot of it.the after market cap was making the fire arc.across the coil.i added taylor wires..8.5mm..should of got 9mm

i installed..platnum plugs.big difference..what i read-is that some of the new pumps.can go bad.quick..one little thing off..and you got a hard start.deal on these engines..mind is a late 96 in a espress van..

 

[WHEELMAN]

all so i have read..these crank trigger engines..the deal.on the crank.a wire can break..some mud can mess it up..until you clean it..a wire can come lose on the fuel pump plug.and you cant see it.you have to really check it out.to see if it is lose or broken.you can have a lost frame ground.on the fuel pump wiring/ground..the new pumps come with the little wiring harness..mind was changed out..remember..that coil.cloud.do a number on you too..i have had no problems with my injectors.some people have the cleaning service done too them.i think they pull each one...

 

[davbell22602]

Yes this the 97 vortec R 350.

 

[davbell22602]

Dont have vaccum hose to the fuel pressure regulator. The fuel pressure regulator is under the intake manifold along with the injectors. Got 14 on the injector balance test on the scan tool.