Just cleaned the thing yesterday and drove about 20 minutes after spraying the oil on. Fine last night, but it seems to be choking today. It's stumbling under acceleration real bad. Anybody know if that oil is bad for motor or if this will eventually go away?

 

i think you knocked a wire loose

 

If your car had a MAF sensor it could gum it up and cause problems, but I don't think it would hurt anything on a TBI car. It definitely won't hurt the engine mechanicals.

 

Oh, hey, I thought I'd point something out to you I've observed since you are using the X-Stream K&N lid....

I've found they make tight hood clearance issues WORSE, with respect to airflow. They are the same on the outside as a plain lid, but the pleats stick down on the inside about 3/4". If your lid is already close to the throttle bores due to tight hood clearance this can actually CHOKE OFF airflow and make the problem WORSE. Carburetors, and to a lesser extent, TBI systems need ROOM above them for the air to straighten out and get a clean shot down the throttle bores. On a carb a full inch of free space is the absolute bare minimum, and even that's restrictive. I've had weird bogs and stumbles sometimes that just can't be tuned out when using the K&N lid without sufficient free space over the the throttle bores. Now on a TBI I'm not sure whether this would cause similar problems since they already have the injectors sitting on top of the throttle bores, but you might want to keep this in the back of your brain to try some back-to-back testing at the dragstrip between the K&N lid and a plain metal lid.

 

pull the filter out and drive it and see.

 

That's interesting man. Anybody else think there might be something to that?

 

Well guys, I crawled around today and found that a spark plug boot had come loose and that was causing the bog. However I still changed out the Xtreme lid to a normal chrome one to see if there's any difference.

Thanks anyways guys.

 

/me wonders why people don't diagnose *before* they post...

 

and I wonder who really cares either way?

 

Definitely not me, it's why I long ago quit trying to help when I see it's a problem that started right after tools were used.

It's way more entertaining to watch you guys flail around like a bird w/ a broke wing...

 

For your information, no tools were used. Took wing nut off, cleaned air filter, reinstalled air filter, reapplied wing nut. I don't know what kind of air filter you're using that requires the removal of spark plug wires, but as we all know, sometimes **** just happens on these cars for no apparent reason. There was no need for your snide comment in this thread.

 

So instead you waste bandwidth posting useless stuff like this?

 

Jumping on the keyboard at the first sign of trouble without doing some basic troubleshooting is wasted bandwidth.

Encouraging people to pop their hood and exercise some common sense is an investment.

 

I agree 100%. However, I think his problem was valid seeing how it happened at the same time as he messed with the filter. Common sence probably overpowered a little diagnostic work. It would be easy to do if you don't work on cars that much. None the less, we should encourage people in a manor that may not come off as being offensive. No harm done.

 

It's still a useful post. It reminds ALL of us, even those who have been around in the hobby/prefession for a while, that sometimes MULTIPLE things can be wrong at once, and even more importantly, that the OBVIOUS cause or explanation is sometimes just DEAD WRONG.

Stuff happens.

I will sympathize that it's very frustrating when the solution couldn't POSSIBLY have been figured out by reading what was posted and trying to make a diagnosis from it.

 

exactly what i was gonna say. i think anyone whos worked on a car has goofed once or twice. i know i have. however i may not have got on here to get help... at first. but who expects a plug wire to pop off when cleaning a k&n. btw is this thread really still open.

 

for instance I didn't know not having enough hood clearance (at least an inch about my cleaner) would cause a bog, this is particularly useful considering my hood sits right on top of my air cleaner.

 

There's no need to straigthen the air flow, unless turbulence is a problem (as in MAF systems.)

An air filter that sits directly on top of a carb, or TBI is basically an elbow from any given direction. To straigthen the airflow after an elbow requires 5 times the diameter of one bore. If you have a 2" bore 10" of space between the filter, and the carb is required.

None of the MAF system meet this requirement simply because there's not enough straight run in front of the engine, because a MAF requires 20" of straight run upstream of it.

 

rg I will be honest in saying I don't fully understand what you are saying but it's been a long hot day in the kitchen and I'm tired so my mind is kinda pooperered out right now. I still think being able to straight the flow as much as possible would be advantagous. with having tight fits and tight bends that would create turbulance. sure it might not be perfectly straight going into the carb but the straighter the better.
if I remember right that is part of the advantage of a snub stack or the velocity stacks on webers is it allows an easier transition into the barrel for a little straighter shot and both ideas really make a difference it seems (at least I know the velicty stacks they used on the webers do) to make for more air flow

 

That's what TPI runners are, velocity stacks, and they don't require any straightening of the air flow upstream, or downstream of the Throttle body, otherwise they wouldn't be curved. The only reason air flow straigthening is desireable upstream in MAFS systems is because the Mass Air Flow Sensor is sensitivity to turbulence.
My daughter's '93 4cyl Festiva has port fuel injected curved velocity stacks.

 

there is a difference I thought between a velocity stack and an intake runner.

velocity stack typicly used on the old dcoe weber style carbs or other side drafts
its a little air horn like piece with a trumpet/bell shaped ending to help smooth the incomming air flow.
tpi are runners are just that intake manifold runners. as far as them being curved it was part of the design to fit a longer runner in there. to fit a runner that long and not have it curved would require a lot of space in the engine bay. still though it does help to have the air flow as straight and as smooth as possible even on a non maf unit. turbulance hurts power and efficiency. when you are able to make the transistion as smooth as possible it allows the air to enter a lot easier and make the motor work less to get the air in. and even if the runners of an intake manifold aer designed nice and allow smooth transition of air flow that doesnt' mean that upstream of the intake manifold couldn't use help being the plenum or carb/tb or other units could still be hampering flow

if turbulance wasn't an issue why would you install headers or change the exhuast system?

 

Exhaust Turbulence:
Because you have 4 pipes converging into 1 on each side, and those 2 into one pipe. If you had 1 exhaust pipe for each cylinder it wouldn't be issue.

Velocity stacks use the "velocity" of reversion waves delayed by the length of the stack to pack more air into the cylinder when the intake valve opens but, this works only for a narrow rpm range e.g. a Tuned Port. The length of V-Stacks are limited, and don't fit under the hood.
Yes, air travels easier in a straight path, but any attempt to change the path (like with an elbow,) for example a carb air filter which, can also be seen as a Tee through it's cross-section will cause turbulence, edges even more, no matter how straight you get the air flow once it hits the throttle blades it will become turbulent again.
That is the reason devices that are designed to "swirl" the air flow into the carb don't actually work because the swirling stops when it hits the throttle blades.

 

even if the throttle blades cause some turbulance there are still effects upstream that can cause issues

again going back to the exhuast system as well since it is one we all seem to know. your exhuast valve itself is a huge restriction and can cause qutie a bit of turbulance but still change the manifold out, the y-pipe or mufflers can all help out
same thing here with the intake through a carb or tb doing something to smooth airflow upstream can still help out


another part of the issue with the swirl generator designs. something needs to create the power to swirl the air and the motor does that only problem is when it does that generally it comes at a loss of output.