Few Quick Questions

TYHOGG

TYHOGG

Active member
I'm new to the forums, just picked up my 93 Typhoon this morning. Its all original with only 31k on the OD. I'm from the Chicago area. The truck seems to drive perfect, just 2 things that are bugging me.

1. My pcv valve on the passanger side valve cover seems to keep comming out, and the remaining hole just pours out exhaust. I figure i can fix it relativly cheap by putting on a longer piece of hose and a new valve. Unless it will keep doing it and i need to do something else to fix it.

2. Not sure if its because of problem one, but at idle it seems to run a little rough. The exhaust looks fine and does not smell of oil, i don't hear any exhaust leaks. But the RPMS fluxuate a little and the truck has a little shake.

Any input would be a big help, i would like to have it run properly right away. Is there anything else i should do for a truck with this mileage?

Thanks,
Adam
 
Maxtor

Maxtor

New member
There are two PCV valves under the intercooler on the passenger side. You should replace both of them and see if that eliminates your problem. Do a search to find the part numbers or check www.sytyauthority.net.

You should give the truck a tune up. Many threads on this topic, but at least include plugs, wires, cap/rotor, fuel filter, air filter, PCV valves. A quick search will give you the specific parts you need. These trucks have very sensitive ignitions - do not take these parts for granted. Use the parts recommended and gap the plugs properly. Just a heads up, if you aren't a do-it-yourselfer get used to having service centers put in the wrong parts and give you back a truck that runs worse than when you gave it to them.

Once you give it a good tune up, your next purchase should be a scan tool like Datamaster. It will show you what is going on with your truck and give you datalogs that you can post to the board if you are having problems. Your next parts to look at will be your fuel pump and intercooler pump.

A semi-rough idle on a stock SyTy is normal. I've never owned a stocker or ridden in one that didn't idle rough, some are worse than others.

Congratulations on your purchase and welcome to the board.
 
TYHOGG

TYHOGG

Active member
dgoodhue said:
If your crankcase is pressurized, it most likely due to bad piston rings or a hole in the piston.


Read and do #2

http://www.syty.org/old/buyers.html
Click to expand...

I did step number 2. It doesn't appear to have either problem. There is no smoke, and i don't feel it pushing any air when i put my hand over it, i used a piece of paper to be sure, it didn't move much.

According to the owners manual it shows it had a full tune up done at 25k with new pcv valves. I'm thinking they couldn't get the old one out of the hose and cut it off, making it to short. I have some extra laying around i'll replace it and see if it fixes the problem.

Thanks for the advice.
 
TYHOGG

TYHOGG

Active member
Good news i got the damn pcv back on, but i had to cheat. It was the second one near the back on the intercooler(not the valve in the cover). I couldn't get enough pressure on it to push the collar into the rubber 90, so i tightened a band clamp around the lower part that fit. Pain in the ass, but it should hold better than the collar in there.

Thanks for the help guys.
 
dgoodhue

dgoodhue

BuSTeD 4.3
Good new about its just being PCV valves, I didn't meant to scare you (I hate being the bearer of bads news, and that one has come up lately).

I wonder if you don't have the factory PCV valve set up (or its modified) or you have the wrong PCV valves. I have never had or seen the problem you have described especially since its a low mileage truck.
 
dgoodhue

dgoodhue

BuSTeD 4.3
Baja Resident said:
I never noticed a second PCV valve, is this for A2W (stock) only?
Click to expand...

One is for vacuum conditions and goes to the throttle body, the other is for operation under boost and goes to the crossover tube. If the crossover tube is no longer used, I would recommend tapping into your air intake elsewhere. I am sure if you do a search some thread will come up on this subject.
 
TYTILIDIE

TYTILIDIE

METH HEAD
dgoodhue Posted: Tue Dec 21, 2004 5:25 pm Post subject:

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Baja Resident wrote:
I never noticed a second PCV valve, is this for A2W (stock) only?


One is for vacuum conditions and goes to the throttle body, the other is for operation under boost and goes to the crossover tube. If the crossover tube is no longer used, I would recommend tapping into your air intake elsewhere. I am sure if you do a search some thread will come up on this subject.

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Hate to sound like such a rookie but why do you really need those? I took both of mine out and just made it to where the hose goes from the top of the vlave cover to the throttle body and my truck runs fine. Is there something I should know about this? I ran my Vatte like that too and never seemed to have problems. If this will cause problems let me know cause thats what I dont want. Thanks

Mike
 
SY2455

SY2455

70's Veteran
This is long but needed.
A Positive Crankcase Ventilation (PCV) system is used to provide more complete scavenging of crankcase vapors. Fresh air from the air cleaner thru a filter is supplied to the crankcase, mixed with blow-by gases & then passed thru a (PCV) valve into the intake manifold.
The primary control is thru the (PCV) valve which meters the flow at a rate depending on manifold vacuum.
To maintain idle quality, the (PCV) valve restricts the flow when intake manifold vacuum is high. If adnormal operating conditions arise, the system is designed to allow excessive amounts of blow-by gases to back flow thru the crankcase vent tube into the air cleaner to be consumed by normal combustion.
Click to expand...
The Syclone & Typhoon have two (PCV) valves so the system will work under boost or pressure & under vacuum. Most people remove the Vent Tube located in the driver side valve cover & replace it with a push in style filter.
The two locations for the (PCV) valve are (#1 at the back of the intercooler which you can reach), & the other (#2 is under the intercooler which required you to remove the intercooler to get to it. I hope this helps.
By the way you really want this system working because it helps keep your engine clean inside & makes your oil last longer, because the oil doesn't break down as fast, so your engine will last longer.
 
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