Bmx240sx

Bought a single cam 89' last night car drove home an hour away fine but car hesitated after like 4500 rpm and then beating it for a bit on my way home car started to drop speed slowly until it turned off now car won't stay on unless you're reving it up to 2k+ the PO said there was some old gas in it before and hadn't ran in a while. What could be the issue? I'm thinking replace the fuel filter and see where that goes

mr.nismo.

There's so many things it could be to list. Check normal maintenance parts (you listed fuel filter, plugs, wires, dizzy, injectors, intake leak, clogged air filter, etc) first and then see what you find. Hell the alternator could be going out, just too general of an issue without confirming it has working parts


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Bmx240sx

Yea I'm taking the day today and getting all of that sorted out and seeing what problems I run into, I'll update later tonight


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Bmx240sx

Just changed spark plugs, distributor cap and rotor, plug and wires car isn't starting now just chugging


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mr.nismo.

Need spark, air and fuel. Find whats missing. Smell fuel when cranking? Grounds good? When I had my sohc my fuel pump wasn't turning on because of a poor battery ground, take jumper cables and put one on battery ground terminal and the other on your shock tower bolt and crank it. Is the ecu throwing any codes? Do you know how to get it into diagnostic mode?


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Bmx240sx

I have spark and fuel last thing to change is the maf sensor and fuel pump I'll try the jumper cables to battery and shock tower tomm though. This is just weird I know it's something small I drove the car a hour away from picking it up then when I tried joining it I realized that it was in limp mode at 4K my buddy started unplugging stuff and then 10 min into driving back home the car just started losing power so I thought I was low on gas I.e my gas gauge is broken so I filled up and the car turned on but I had to floor it to only have the rpms top out at like 2k then slowly die


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mr.nismo.

2k exactly or around 2400? When the maf goes to shit 2400 is limp mode.


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Bmx240sx

Yea going to look for a maf today no stores carry it around here :/

rawgarage

I can ship u a good maf....


Single cam maf Is same as SR maf

Bmx240sx

Price?


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Bmx240sx

Ok so I replaced the fuel pump and the car actually starts now but it won't rev over 2500 rpm my last option is to install a new maf sensor (which is on the way) hopefully this is the last thing I need..


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TheRealSy90

Plug back in all the shit that your buddy unplugged maybe.

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mr.nismo.

Sounds like maf limp mode. Also single cam maf is not EXACTLY the same as sr maf


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Bmx240sx

Yea that's the first thing we did before trouble shooting all of this


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Bmx240sx

No worries I ordered a new maf sensor and connector this should all be here Tom


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Bmx240sx

Also did a compression test on all cylinders today
Cylinder 1

Cylinder 2

Cylinder 3
Cylinder 4

So hopefully it's only the maf sensor that's the issue


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Bmx240sx

Got the new maf in the car actually started right away but still in limp mode


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Bmx240sx

Now the car is smelling like gas and even exhaust smells too rich spark plugs are black and I changed them a few days ago


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mr.nismo.

When your maf toasts , it goes rich (limp). After a bit it will foul your plugs. Just probably a lot of left over fuel


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Bmx240sx

So what should I do? I was thinking of taking the day to clean the injectors and getting new spark plugs ?

mr.nismo.

Get new plugs and clean injectors how?


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Bmx240sx

Did you mean now* ? Lol


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Bmx240sx

Well looks like my injectors are pretty clogged up lol


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mr.nismo.

Meant now but fuck that's nasty haha. Change fuel filter and pump sock and see what inside your tank looks like


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Bmx240sx

I didn't think cleaning the injectors would do anything but it did had the battery disconnected and cleaned them and got new o-rings and she started right up haha what a miracle


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Bmx240sx

Now I'm running into another issue the car had before which it seems like is cutting fuel when I punch it starts to lag up what can that be


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mr.nismo.

Clogged fuel filter , clogged fuel pump sock, dying fuel pump, kinked lines, for can't keep pressure, spark plugs, ecu isn't getting speedo signal. Lol there more things it could be too


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Bmx240sx

Well my gas gauge doesn't work and I just needed gas haha shes running normal now woohooo


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Bmx240sx

Can someone explain to my why ever since I changed my fuel pump my tank starts to leak gas? I already seated the o ring properly and the two hoses are always dry it's just leaking around where you see it all wet?




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lunchmeat

One of those hoses looks like it isn't pushed down far enough.