What is it about doing a simple induction service, that the throttle response should double and the engine should be even more smooth??

A little while ago I did just that. I used one bottle of toyota induction cleaner, hooked up to the small vacuum port on the left plenum and let it slowly suck it all in. I knew it was doing something when it started smoking like a mosquito machine. I have done alot of induction services during my years, especially as a mech at toyota . But I have never, ever experienced the results I got today.

Educate me fellas - my '92 does NOT have those pesky injectors which fail when seafoam is run through them...right?? Cause I really want to do that as well and see if even more of an improvement...

VIVA LA


UPDATE: Just performed a full tuneup on the beasty. Put in new plugs, K&N airfilter and modified the airbox for better/more flow, royal purple synthetic, seafoam treatment for plenum and fuel, trans fluid (6spd) and rear diff lube. Greased every nipple I could find. All I can say is there is a night and day difference!

I used to own an '88 camaro RS and it behaved the same way. Just give it a good tune-up and the overall experience is just better. Seems the same way for the LT-1 as well.

The beast now idles better and pulls much more cleanly from low revs/1st gear. And it nows pulls strongly all the way to redline. Before it did also, just it began to noticeably "wheeze" by the time 5k rolled around and up.

I really like that traction control, makes for an enjoyable experience when hitting a turn at low speed and then pedaling it....and even more so when it is switched off and gettin it sideways! This is a very easy car to drive fast. I love it!

J

J

 

I forget what they call those injectors but they are on the L-98s. The LT1 injectors are O.K to use Seafoam with. I cant wait for warmer weather so I can let my intake suck that foam in.

 

I've put 2 cans of SeaFoam through my L98 in the last 1000 miles and have not had a single problem. In fact, I haven't seen my SES Light in weeks, and it used to come on every so often for a few moments.

 

Multecs

 

KOOL.......

 

I think it matters if you're using the old multecs versus the new ones. I think all the C4 years might have come with multecs.

 

How do I tell which Multecs mine has?

 

If it's a 92 that's probably late enough to get the new and improved multecs.

 

good to know it makes a difference. I'm a Volvo tech and we use this pressurized fuel injection kit. it kinda looks like a nitrous bottle with a hose. we hook up an air hose to it and pressurize to about 3-4 bar . I've done it on my other cars, just not the Vette yet. this setup is hooked up to the Schrader valve on the fuel rail and is used as the fuel supply so it's ran through the whole fuel system. you take the fuel pump relay or fuse out to disable it. haven't looked yet, but do the LT1's have a Schrader valve on the fuel rail anywhere?..

 

Yes there is. Its the same valve the Fuel Pressure Regulator goes on.

 

Schrader valve is at the back of the manifold near the EGR vale.

 

Nope, many Rochesters and some others.

 

Your 1989 have the ones everybody bitches about. I think it is more urban legend than fact. 89, 90, and 91, had them for sure. People repeat what they hear over and over. Many have lasted over 100K. Mine have 52K on them and 18 years and they test all to spec and work great. Worry about something else unless you are actually having trouble.

 

See first post...

 

I am a user of Seaform, there as been some debate on its use with the Multec Injecters due to the Service Bulletin that GM has published about using there Top End cleaner and other additives with cars using the Multec Injectors.. as well as some users reporting problems with using it and causing the injector to fail.

I question this with the Seaform Tech and they stated that Seaform should cause no problems as it is a Oil Base product as compared to other additives that are not oil based and have cause the problem that the GM service memo has stated.
If I recall .. the Multec Injector came in the later C4 (89+ to the end of the C4 line)... Prior to that (84-88) used the Lucas or Bosch injectors.

The Multec Injector is a Wet Coil type (fuel and additives flow around and cool the injector) and therefor if subjected to Harsh chemicals as in some types injector cleaners (as well as the GM cleaners) can and will deteriorate the protective coating on the coils of the injectors and destroy the injector.