Help! - Purge solenoid pipe - LS7 - broked!
Help! - Purge solenoid pipe - LS7 - broked!
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V8 Vum

Original Poster:

3,206 posts

245 months

Monday 12th April 2010
quotequote all
Hi Guys,

Hope someone can help. Not very exeperienced with US engines.

Have a new LS7 crate engine languishing in my garage for a while, and got to examining it prior to fitting it into my project.

Problem is I found the purge solenoid pipe swinging-in-the-wind so-to-speak! i.e. the solenoid end is OK and connected, but the other end looks like it has sheared off. The offending clip-end is showing a small thin-walled bit of ally pipe broken off!

Jeez! must have got hooked on something and wasn't noticed!

First, where should it be connected, and what am I looking for???

.... and second, can it be fixed and how??? (Jeez, I do hope so!)

Please help as I need to get the engine in soon!

cheers

Keith


stevieturbo

17,985 posts

271 months

Monday 12th April 2010
quotequote all
purge solenoid...bin

Its purely a strict emissions device to evacuate fumes from the fuel tank into the engine intake ( via a charcoal canister usually )under certain operating conditions. As its a conversion, just vent the tank suitably to atmos, and bin the solenoid.

Unless of course you have to also meet those strict emissions criteria. But baically they dont seem to like anything at all venting to atmos.

V8 Vum

Original Poster:

3,206 posts

245 months

Monday 12th April 2010
quotequote all
Stevie,

This LS7 is going into a project that will be IVA tested, so will this effect the emissions or anything else?

Also since there is a sensor wire going back presumably to the ecu (GM) will this mean that the programming will have to be changed in any way?

Sorry for the numpty questions!

cheers

Keith

stevieturbo

17,985 posts

271 months

Monday 12th April 2010
quotequote all
Dont really think it would affect IVA. As long as the crankcase wasnt obviously vented somewhere nasty, Im sure it would be fine.

By emissions, some US vehicles would require the entire cars emission control system to be swapped to any vehcile. This would include absolutely every aspect of it. Tank, wiring, lines, the heap !!! But that's extreme places like California etc.

If it wasnt plugged in, then yes the ecu may register a fault. If the solenoid is plugged in...I doubt the ecu would know if it is actually doing anything or not.

tinker-27

835 posts

248 months

Thursday 15th April 2010
quotequote all
i have some spare emission pipes etc if you need them but you are better to not use them as its not worth the hassle just unplug it and put the rest in the bin,