subynut Posted June 29, 2004 Share Posted June 29, 2004 Every time I take a hard left she sputters like she's out of fuel. What gives? Also does the same thing when I'm going down a very steep hill. Carby? Erratic fuel pump? Don't know!!! Link to comment Share on other sites More sharing options...
WoodsWagon Posted June 29, 2004 Share Posted June 29, 2004 Does it blow blue smoke when it spetters on left tuns? I remember something about the PCV system having mismatched hoses that allowed oil to build up and empty into the intake on left hand turns. Link to comment Share on other sites More sharing options...
[HTi]Johnson Posted June 29, 2004 Share Posted June 29, 2004 My soob did that too. It was a 1983 Sube GL 2wd. Dunno why I said that, don't know what caused it. Maybe it is the power steering? Link to comment Share on other sites More sharing options...
urabus1995 Posted June 29, 2004 Share Posted June 29, 2004 My 1992 DL 1.8 dual range 2/4 WD did the same thing but on sharp right turns. It was RH drive. Maybe that could be a clue ? I assumed it to be a Carb/ fuel feed problem. I was told however by someone at work that their brother had the same car, and that the hydraulic valve lifters could run short of oil/fluid on real fast corners such as roundabouts etc. I never had the problem on hills though. It really sounds like it is a carb related problem. I would be surprised if its a fuel pump issue, cos the effect is so quick to happen, on the actual corner, rather than a delayed one. Post us if you discover the real reason, I am very curious about this effect. Link to comment Share on other sites More sharing options...
subynut Posted June 29, 2004 Author Share Posted June 29, 2004 Does it blow blue smoke when it spetters on left tuns? I remember something about the PCV system having mismatched hoses that allowed oil to build up and empty into the intake on left hand turns. Nope. Only when I'm decelerating and get back on the throttle, will it blow billows of blue smoke. The PCV sys is not the original setup; the right side has just a filter and the left still has the piping to the pcv valve. Also, there seems to be oil splashing through the right filter cause that side has alot of oil splattered around in that area. Any other ideas?!? Link to comment Share on other sites More sharing options...
subynut Posted June 30, 2004 Author Share Posted June 30, 2004 Ok, Re did the PCV sys: Plugged PCV valve, ran a hose to each side, with a tee in the middle, filter at end. Did a few fast lefts and the stumbling seems to have disappeard. Will do more testing tomarrow. Link to comment Share on other sites More sharing options...
Nug Posted June 30, 2004 Share Posted June 30, 2004 You need to clean your engine...j/k:) Link to comment Share on other sites More sharing options...
subynut Posted July 1, 2004 Author Share Posted July 1, 2004 You need to clean your engine...j/k:) Nah, it'l only get dirty again when I see a mud puddle. ;-) Had to take dad's truck in to get some quirks fixed today, so I didn't get a chance to see if I fixed my problem or not. Will try again tomarrow. Link to comment Share on other sites More sharing options...
GeneralDisorder Posted July 1, 2004 Share Posted July 1, 2004 Fuel pump doesn't have enough pressure. The Weber needs 2.5 to 3 psi (some books sugest as much as 4 psi). The stock pump is only capable of 1 - 2 psi, and that's when they are new. I would imagine that a 20 year old pump is probably putting out the bare minimum or possibly less. The lack of enough fuel pressure is keeping your float bowl too low because the pressure isn't enough to overcome the spring loaded release mechanism. Thus your problem on sharp turns - it's leaning out the mixture on you I would guess.... GD Link to comment Share on other sites More sharing options...
archemitis Posted July 1, 2004 Share Posted July 1, 2004 a clean engine is a cooler engine. looks like morganms engine bay!_! Link to comment Share on other sites More sharing options...
MorganM Posted July 1, 2004 Share Posted July 1, 2004 You are on the right path. Ignore the assumptions and guesses on the fuel system. Fuel pumps dont blow blue smoke; oil in the comubstion chamber will however Your current setup wont allow oil into the intake again thankfully. Let us know how it all works out! Peace Link to comment Share on other sites More sharing options...
GeneralDisorder Posted July 1, 2004 Share Posted July 1, 2004 He said it does not blow smoke on left hand turns - just stumbles. I do agree on the PCV routing change because of the oil you described on the valve cover, but I also believe your pump is not keeping up with the demand of the Weber. GD Link to comment Share on other sites More sharing options...
subynut Posted July 1, 2004 Author Share Posted July 1, 2004 Ok, I'll check the fuel pressure. One side note: on long periods of WOT and high RPMS I do not get any fuel starvation. Don't know if that makes any difference or not, just thought I'd let ya know. Off to check the fuel pressure..... Link to comment Share on other sites More sharing options...
subynut Posted July 1, 2004 Author Share Posted July 1, 2004 Just finished checking the fuel pressure: was wandering between 2.5 and 3 psi. is that a little low? Link to comment Share on other sites More sharing options...
GeneralDisorder Posted July 1, 2004 Share Posted July 1, 2004 Actually, no - that's a bit high. The stock FP for the carbs is 1.35 - 2.06 psi by the FSM. But for a Weber your's is close to optimal. Although it's a bit of a mystery why your's would be that high. I can't imagine they would fail with an increase! GD Link to comment Share on other sites More sharing options...
archemitis Posted July 1, 2004 Share Posted July 1, 2004 gd, measure some other cars. my ea82 and ea81 stock fuel pump both read about 4 lbs on a guage, differnt guages. Link to comment Share on other sites More sharing options...
GeneralDisorder Posted July 1, 2004 Share Posted July 1, 2004 Sorry Arch, but I don't have to measure other cars - I have FSM's..... Where it clearly states under Non-Turbo, discharge pressure = 1.35 - 2.06 psi. And no - I didn't scan that - it's from Qman's album.... GD Link to comment Share on other sites More sharing options...
MorganM Posted July 1, 2004 Share Posted July 1, 2004 ... when I'm decelerating and get back on the throttle, will it blow billows of blue smoke. ... huh? whats that? it DOES blow blue smoke? interesting.... -------------- So Subynut, tried any more turns with that new PCV system? Any difference? Link to comment Share on other sites More sharing options...
GeneralDisorder Posted July 1, 2004 Share Posted July 1, 2004 Nope. Only when I'm decelerating and get back on the throttle, will it blow billows of blue smoke. As in - it does not do it when turning left - which was his original question, and the one which I was addressing. By his own description, they are two seperate problems..... Also - if the fuel pump pressure is good, it might be a good idea to test the fuel pump volume as well - especially since the pressure reading seems a bit high acording to the FSM. GD Link to comment Share on other sites More sharing options...
MorganM Posted July 1, 2004 Share Posted July 1, 2004 As in - it does not do it when turning left - which was his original question, and the one which I was addressing. By his own description, they are two seperate problems..... GD Still could have been sputtering on oil, with out smoke. Takes quite a bit of oil in the chambers to blow enough smoke to see. Mine wouldnt smoke 'till i was out of the turn (after deselerating from the turn) and then hitting the gas again. Sometimes it wouldnt even smoke, just sputter and go out of the turn. I"d really like to know if that PCV setup helped at all after running them both to a breather... Link to comment Share on other sites More sharing options...
GeneralDisorder Posted July 1, 2004 Share Posted July 1, 2004 That's true - and it's difficult to see the smoke while driving. I would also like to know if your PCV changes did away with the problem..... GD Link to comment Share on other sites More sharing options...
subynut Posted July 2, 2004 Author Share Posted July 2, 2004 Ok, that seems to have fixed the problem. Doesn't stumble on hard left turns any more. Also I have more low end torque again, too. Yet, I have the same amount of vacume at idle. Still smokes, but, it's alot less than before. Thanks guys! You've been a great help! Now I can buzz around corners and slide in the dirt again without having to restart the engine! Link to comment Share on other sites More sharing options...
MorganM Posted July 2, 2004 Share Posted July 2, 2004 Ok, that seems to have fixed the problem. Doesn't stumble on hard left turns any more. Also I have more low end torque again, too. Yet, I have the same amount of vacume at idle. Still smokes, but, it's alot less than before. Thanks guys! You've been a great help! Now I can buzz around corners and slide in the dirt again without having to restart the engine! Glad you are back on track! Try some seafoam in the gas tank to clean that oil out of your chambers Good luck !_! Link to comment Share on other sites More sharing options...
Martin Posted July 5, 2004 Share Posted July 5, 2004 What sort/size filter did you use in the pcv system? Link to comment Share on other sites More sharing options...
subynut Posted July 5, 2004 Author Share Posted July 5, 2004 It's one of those "fancy" aftermarket cone types you find at Autozone or PepBoys. It was like, 5 or 7 bucks (I think) Thought it would go with the carb filter rather nicely. Well, when it's clean, that is! Page one has a pic of it. Link to comment Share on other sites More sharing options...
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