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Thread: Smell of gas
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Rotary_Pickup
Hauling
Posts: 117
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posted July 19, 2004 03:29 PM |
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Smell of gas
There is a strong gas smell near the filler/fuel pump area when my truck is running. There are no leaks. I was thinking of replacing the parts in the entire area (fuel pump, rubber lines, etc.). Could the problem also be a bad sending unit seal?
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KansasCityREPU on RX-7Club.com
85 GSL
77 REPU (1/1/2004)
75 REPU (7/10/2004)
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Hunter
Hauling
Posts: 178
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posted July 19, 2004 03:37 PM |
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gas leak
Remove the panel in the front left corner of the bed and inspect the evaporation tank and all of its connections.
I had to remove mine and get it welded up for a repair to make the system air tight again.
Bruce Toski
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Rotary_Pickup
Hauling
Posts: 117
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posted July 19, 2004 04:19 PM |
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That make since. When I remove the gas cap, I do not notice a swosh of air that comes from a air tight system.
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KansasCityREPU on RX-7Club.com
85 GSL
77 REPU (1/1/2004)
75 REPU (7/10/2004)
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ovquick
Redlining
Posts: 253
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posted July 19, 2004 07:17 PM |
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There is also a valve that controls the "swoosh" of air, you might check that whil you working in that area.
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roaddancer
Hauling
Posts: 127
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posted July 19, 2004 07:58 PM |
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Some tanks had a valve venting to the intake manifold or carb to capture fumes. If that one gets stuck you can get a hard vacuum in your tank. In other words, some swoosh, OK, strong swoosh may be a future problem.
My 74 pulled that on a rainy day, sucking the tank down till the pump couldn't feed the engine. I kept looking for a wet ignition problem....Until I happened to open the tank right after it stalled. Couldn't get the cap off!
I would think if that valve stuck shut, you might get a buildup of pressure that you might smell.
My 75 has a bad angle inside the filler and the stations keep spilling down the outside, causing a smell to haunt me for a couple days... I may rip that stupid double restrictor out of the spout.
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formerly
rx2/3/4/cosmo,repu,94 rx7,
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klaus43
Rotorhead
Posts: 1259
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posted July 20, 2004 07:14 AM |
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'Double Restrictor'???
...must be a '75-on feature...? I can tell you that the angle/length of the filler neck sucks for avoiding spills, regardless. Doesn't like to do that 'third click' on the pumps, at all!
Then there's the *sometimes* lacking competence of the attendants...(I'm in a state without self-serve...)
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brad
Rotorhead
Posts: 1672
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posted July 20, 2004 03:10 PM |
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quote:
I can tell you that the angle/length of the filler neck sucks for avoiding spills, regardless. Doesn't like to do that 'third click' on the pumps, at all!
Then there's the *sometimes* lacking competence of the attendants...(I'm in a state without self-serve...)
Glad to know I'm not the only one with these issues. Once the tank is filled a couple ounces of gas trickle down the side of the truck. I end up getting the window squeegie from the gas station and wetting down that area before starting fillup. And after spilling.
Anyone else have to hold the gas pump nozzle in the truck while pumping? If I let go of mine the gas pump nozzle wants to fall to the ground :(
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-brad-
74 REPU Lawn Green
81 Rx-7 racecar. 12a J-
Bridge
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nwaco
Redlining
Posts: 407
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posted July 20, 2004 05:27 PM |
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Yea, I think we all have to hold on....
although I rotate it upside-down so it's more confortable to hold. I can't seem to get one click, let alone three.
If you all think that's bad, try pre-mixing with the spout the way it is. If you think gas is hard to get in, try oil. It's a stinking mess I tell you.
I have tossing around a few ideas to make improvements in getting the oil in without the mess. Right now, mostly I squirt in the oil, then flush it down with gas, then swirve a bit for the first few miles to mix, and I'm good to go.
Sometimes I premix a few gallons at home, then dump it in at the pump and top it off.
I've thought of a metered manual pump from a separate oil tank plumbed in to the gas neck, but so far, all I've done is think. Have'nt yet done.
Ive seen an OMP replacement part to use the omp shaft to pump oil from a separate tank, but at over $100, kind of spendy, but not a bad idea. Also, they are made for second gen covers.
Premix is more reliable, but oh so messy...
Anyone got any other ideas...short of omp re-hookup?
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klaus43
Rotorhead
Posts: 1259
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posted July 21, 2004 05:54 PM |
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"Re-routing" of filler neck
... to the bed, where the sending unit now lives... might that cure the issues, (nevermind premix vs. OMP...)?
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Rotary_Pickup
Hauling
Posts: 117
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posted July 21, 2004 06:32 PM |
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quote:
.. to the bed, where the sending unit now lives... might that cure the issues, (nevermind premix vs. OMP...)?
One quick question about premix. Would it hurt anything if I kept the OMP and also do the premix?
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KansasCityREPU on RX-7Club.com
85 GSL
77 REPU (1/1/2004)
75 REPU (7/10/2004)
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nwaco
Redlining
Posts: 407
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posted July 21, 2004 07:04 PM |
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I doubt it would "hurt".....
although you might be inclined to overfeed thus fouling your plugs a bit more often. excess smoke might be another consequence. And if I was to guess, too much oil feeding might just coke up and lead to sticky or stuck oil rings which of course leads to more smoke and well, you all know the drill....
Just a coupleof guesses.
I mainly prefer premix because the oil is meant to burn, and goes everywhere gas goes so you know your lubing the entire seals rather than the drip method.
Burning motor oil was a compromise from Mazda as they knew people would not go for or probably remember to add oil to a separate tank, and it is messy to boot. And failure there would doom their engine popularity, and probably the entire engine line. At least if they got them to check or change their motor oil fairly frequently, the engine might have a fighting chance. Even as it is, in the life of an average rotary car, at least one moron forgets to add oil and thus that is my guess as to why many an engine dies from 120K to 140K.
It only take one oops to add stock to our parts supply chain.
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klaus43
Rotorhead
Posts: 1259
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posted July 21, 2004 07:37 PM |
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You could
...just disconnect the OMP linkage, and run premix while you ponder the benefits...
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