ok so I've been through a plethora of troubleshooting, trying to figure out this issue. I have an 89 pulsar that has a bad bogging issue. If i slightly push the gas, it will rise in speed slowly, but if I press any harder, it will bog really bad. won't go past 2k no matter how hard you press it. Idles High, around 1500-1600. I have ruled out the cat, disconnected exhaust with no effect. Replace fuel filter, made sure timing was ok.checked hoses, alll seem to be fine. wires are good, plugs need to be changed, but because of a brand preference. I owned an exact same car about 5 years ago, but have owned mustangs, now back to nissan cause I'm tired of being broke down! I posted a video on youtube, it actually sounds worse than it really is....
ok so after a little pinpointing to the problem, I noticed that when I press on the gas, it bogs down, and a big puff of gas comes up out of the carb. Enough to cover my hand or cover a big section of the air filter with gas. What could cause this? bad injector?
Vacuum leak.
Put a fuel pressure gauge on it and watch while you rev it up.
Put a timing light on it and watch while you're revving it up.
Didn't say anything about swapping out the plugs/wires/cap/rotor either. Ya know...a full tune up.
__________________
99% of the questions that are "STRANGE" have a dirt simple answer...usually answered by a dirt simple search.
Is it just me, or does the majority overlook the obvious?
Somebody ate a whole bag of dumbass for breakfast.
Why do people continue to run a vehicle when a warning light comes on or starts flashing? Isn't that a clue that something is wrong and you probably should NOT drive it?
Is this whole car driving thing really freekin' brain surgery?
Here's something new for the crowd/clowns...
"A little bit of Google goes a long way!"
Ever notice the one post wonders for info on turbo'ing a GA16 are never heard from again after they figure out the cost???
And if you can read this, you don't need glasses! :)
so after doing some troubleshooting (again) this is what I have found....I'm pretty sure the whole underside of the air filter, and the fact that it spits out waaaay too much gas is the cause of my bogging issue...i just don't know why its doing it.
Put a vacuum gauge on it and do a compression check.
About the ONLY way it's gonna spit gas back out the top is if the cam timing went out or if you've got bad intake valves and/or seats.
Since it doesn't sound like it's skipping on the same cylinder every time around, I'm guessing your timing chain jumped a tooth...a single tooth, maybe two...based on it sounding like it's doing it every time a piston comes up on the compression stroke.
If the earlier models of the 1.6L are like the later ones, any more than two teeth and you'll be smacking pistons and valves.
EDIT: Well, scratch that. I guess if your carb is messed up, e.g. float setting messed up or sunk allowing too much fuel in the bowl, power valve/jet stuck open, etc., certainly possible that it might spit out the top.
I'm not up on these carb'd models, basing my info on my GM/Ford/Dodge experiences, and practically the only time I saw fuel vapor coming out the top of the carb is when I had rotten intake valves (Chevy), a blown power valve (Fords, Dodge),
__________________
99% of the questions that are "STRANGE" have a dirt simple answer...usually answered by a dirt simple search.
Is it just me, or does the majority overlook the obvious?
Somebody ate a whole bag of dumbass for breakfast.
Why do people continue to run a vehicle when a warning light comes on or starts flashing? Isn't that a clue that something is wrong and you probably should NOT drive it?
Is this whole car driving thing really freekin' brain surgery?
Here's something new for the crowd/clowns...
"A little bit of Google goes a long way!"
Ever notice the one post wonders for info on turbo'ing a GA16 are never heard from again after they figure out the cost???
And if you can read this, you don't need glasses! :)
jdg....that's not a carb but throttle body injection.
I hear an awful lot of rattling when I played the vid. Is that the timing chain? If so, it may have jumped. GA16i engines had the same problems with the plastic timing chain guide breaking as do many KA24E engines have in the Hardbody trucks and early 240SX's. Like the KA engines, the plastic guide was updated with a metal guide.
i don't know honestly, Ive never had to deal with timing issues on any car Ive ever had, including another ga16i pulsar. So what should I do? where do I go from here?
If you have a loud rattling noise at the front cover of the engine, especially at startup, you likely have a broken guide and possible jumped (or at the very least, a loose) timing chain. You can remove the valve cover and look down and see the broken end of the plastic guide, if that's what you have. If that's the case, you'll need to replace the timing chain set.
Is it just me, or does the majority overlook the obvious?
Somebody ate a whole bag of dumbass for breakfast.
Why do people continue to run a vehicle when a warning light comes on or starts flashing? Isn't that a clue that something is wrong and you probably should NOT drive it?
Is this whole car driving thing really freekin' brain surgery?
Here's something new for the crowd/clowns...
"A little bit of Google goes a long way!"
Ever notice the one post wonders for info on turbo'ing a GA16 are never heard from again after they figure out the cost???
And if you can read this, you don't need glasses! :)
honestly I really don't hear a rattle from the front of the engine. I do hear the power steering pump catch every once in awhile...the pump had a frozen belt on it or something. but I'm sure its got to do with my throttle body cause if i put the air filter on it, it will soffocate and die. so i know its not getting the right air/fuel mixture.
I hear a rattle...all over the place.
You won't know anything and can go on guessing all day and waste time...
Or you can get a compression tester and vacuum gauge and get to work...
__________________
99% of the questions that are "STRANGE" have a dirt simple answer...usually answered by a dirt simple search.
Is it just me, or does the majority overlook the obvious?
Somebody ate a whole bag of dumbass for breakfast.
Why do people continue to run a vehicle when a warning light comes on or starts flashing? Isn't that a clue that something is wrong and you probably should NOT drive it?
Is this whole car driving thing really freekin' brain surgery?
Here's something new for the crowd/clowns...
"A little bit of Google goes a long way!"
Ever notice the one post wonders for info on turbo'ing a GA16 are never heard from again after they figure out the cost???
And if you can read this, you don't need glasses! :)
After listening to the videos, I'll have to agree with SMJ and JDG about the noise. It is very very noisy at idle. Does seem to point to a bad timing chain assembly.
how often do timing guides break on ga's? my first pulsar I had no problems. I was told that the owner before the guy i bought it from replaced the timing belt. i would assume it was all changed.....but who knows. Could I just replace the guide?
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