I have a 2001 Lincoln LS V8 that runs rich and no one can solve the problem that's been going on for close to a year. The fuel sys pressure tests fine. The fuel regulator sensor has been replaced. First start in morning is normal but after that I need to give it gas to get it to turn over. Also, car has a fuel smell.
View 8 RepliesI have a recently rebuilt 400 with a mild cam and Tmeyers flat top pistons. The carb is a 600cfm edlebrock that was bought new and installed a few months ago.
The issue I'm having is if I'm driving around and shut it off to run in the store its hard to start when I come back. I end up having to floor the gas to get it to start. When it's cold I tap the gas and turn the key and she lights right off. Could this be an issue with vapor lock? Why does it go away if I floor the gas?
Only other thing going on is when accelerating the engine runs noticeably smoother above 2700rpm. It's a little boggy below that. Probably two different problems but I figured I would throw it out there.
I own a 1998 C2500 Silverado. Recently I started noticing extreme gasoline fumes. Took truck in to my local mechanic and found out the fuel pump module had come loose from the gas tank. My mechanic dropped the fuel tank to access the fuel pump module for repair and discovered that the fuel tank had caved in ( imploded ) the full length of the tank. I've been told the fuel system is pressurized. How does the pressurized system work and what could have caused deformation of the fuel tank?
View 6 RepliesMy 302 runs pretty good when all warmed up. It has some cold start issues every now and then, but is easily dealt with. My question is how to best "tune" the carb. It's a 600 cfm 4150/60 style Holley single pump, vac secondaries and electric choke. About as basic as you can get. I think I have the fuel level set correctly. I also think I have the "idle mixture" set right. I used a vacuum gauge and moved back and forth between screws till I got the highest vacuum. Is there a better way than that? I have the idle set correctly. the fast idle is a little high, but I can fix that.
Now, my real question is how to fix the hiccup and stumble I get many times when I step into it pretty good. I assume that this is the point the carb is going from idle circuit to main circuit. It stumbles when I get on it real hard from a standing start. I can roll slowly and step into it and it stumbles as well. I also like to blip the throttle when I down shift (it has a manual tranny by the way), and many times I'll blip it and get nothing. Now, it runs fine after the stumble all through the rpm range. That's the only time it stumbles. so, do I need more accel. pump shot?? To compensate on the transfer of circuits.
I also notice when I on it real hard, during the shift right when I jump on it, under the heaviest load, I hear a bit of spark knock. It's not running hot, and the timing is good. Do I need a bit bigger jets? I'm thinking it's going a bit lead during that time, but I don't have any real way to measure it.
Three times this winter, during or after a several day freeze, my car won't start without lots of gas peddle pumping. AAA tech said it was water in the gas and recommended HEET. I've used it with apparent success but wonder why I've never had this problem before in over 50 years of driving in the Seattle area.
View 2 RepliesI have a 2005. 2.7L 168,000 miles ... Twice in a row, right after putting gas in the truck. It had trouble starting. It took about 3 to 4 cranks to get it started. Runs and starts fine after that. It's only when trying to start after a fill up. o2 sensor?
View 4 RepliesI replaced the fuel pump in my 2001 chevy blazer last year and it just quit again two days ago. Internet research leads me to believe it is a common problem in chevy turcks. Blazer stops running, sits for a few hours to a day and then starts up again. Is it going to happen again and is it really the fuel pump.
View 4 Replies95 lincoln towncar was running fine all day. made a pit stop later on and the car wouldn't start. previous owner said it would do that occasionally and to let it sit for 20 min. or so. still wouldn't start! released fuel pressure at fuel rail and then the car started just fine and was running like nothing happened! could I be getting too much pressure? also never did get the smell of raw gas!
View 4 RepliesI just changed the fuel pump on my 98 Isuzu Rodeo and now it wont start. The pump is getting power because i can hear it humming. Fuel is getting to the fuel rail, I checked the the shrader valve. I tested the battery and its fully charged but it wont start.
View 19 RepliesI have a 2005 Corolla with 78,000 miles. The other day it stalled at a stop sign and wouldn't start. I got it towed to the repair shop and they called me the next day with the following:
1. Under the back seat is a fuel compression module. This has gone bad. They need to take out the seat, order the part, install new.
2. The belt that drives the accessories motor (or something like that, don't recall the exact phrasing) is worn, cracking, and probably going to break. Needs replacing. Battery is corroding and needs replacing.
I've got a 01 f150 yesterday stopped running (like it ran out of gas). Has half a tank. Fuel pressure at rails good but truck will not turn over. Fuel pump and filter less than year old.
View 1 RepliesAlmost every time I start my 2001 Ford Focus, it won't start. The starter functions but the engine won't start. I have to pump it, give it gas, and once it starts, it's perfectly fine, no stalling, no problems after that. That is until I turn the engine off. When I go to start it again, say after doing an errand or two, it may or may not happen again throughout the day, the problem only occurring when I attempt to start it.
View 1 Replies2002 E-250 with the 4.6 V-6. Pulled the 30 amp fuse, replaced the fuel filter, replaced the fuse, now the truck wont start. Checked the fuse and the kill switch under the passenger kick cover, all ok. Cranks and cranks but wont fire. No problem prior to changing the filter. Even swithed out the relay with another, no luck.
View 4 Replies1994 150 300 6. parked truck after lunch finished work and it wont start no fuel comes out of the valve. Can't get the pump to work even when jumping the 6 pin. heard the relay click still nothing. Checked the inertia switch it wasn't popped. Took the pump out jumped it straight from the battery pump works . I know there has to be something i am missing...
View 7 Replies4150 Holley 532BBF float adj issue . I think i have it close, but its so hard to tell because the engine shakes the vehicle so much its hard to set the floats so that it just trickles out of the float holes. (532 kasse P51 heads, big roller cam) Is there an easier way to do it say on the bench?
View 1 Replies115,000 miles, adult driven. Hard cranking, took into dealer. Replaced 4 injectors - cylinder 2 misfiring. Showed me return gas line clogged with brownish material. Dealer stymied.
Now, Subaru headquarters diagnoses replacing all steel fuel lines, fuel rails, fuel pump...full of rust from inside. Tank looks Ok, as does filler neck. Premium gas used always, added Drygas seasonally as needed.
Question: where the heck would rust come from? What can I do to prevent this problem again? Love the car...would like to get 200,000 from it.
I have a '99 E-350 6.8L. Where is the check valve that maintains fuel pressure on the system?
I have been experiencing a starting issue when the engine is hot. Cold starts are usually fine. I've replaced the in-tank fuel pump (pump only, not the assembly) to no avail. I was out of town and didn't have access to a fuel pressure gauge when the problem started so I couldn't say what I had prior to replacing the pump. But now, with a new pump, when I check pressure, I get about 40 psi when I first cycle the key on, but it drops right back to zero as soon as the pump shuts off. If I cycle the key on a few times, sometimes I can get it to hold pressure at about 32 psi, and it starts fine. When I shut if off, it goes back to zero psi, sometimes gradually, like a bleed down, and sometimes immediately.
My conclusion from this was that the check valve was bad. I was told it was part of the in tank fuel pump assembly. Since I didn't replace the entire assembly, this made sense. So I just dropped the tank back down, but I don't see anything as part of the pump assembly that serves as a check valve. There is a rubber nipple on the end of the return line, but I don't see how that can hold any significant pressure.
So, before I go out and spend another couple hundred bucks on the complete fuel pump assembly, which apparently can't be purchased without the actual pump, I thought I'd ask. Where is the check valve that holds the pressure in the fuel system?
BTW, I also have replaced the fuel rail pressure regulator, but it made no difference (I went there first since that was much easier than dropping the fuel tank a second time).
My 79 Lincoln Town Car vibrates in the front end during hard braking and braking from more than 30-35mph. There is no vibration in the rear, during turning or felt in the wheel. Is this wheel bearings, rotors, steering linkage, tire belts slipping or suspension? She has four wheel disc with early version of anti lock on rear. Brake fluid level is good with no leakage. Tires are near new but sat for long time parked in garage.
View 1 RepliesI have 1976 F250 with a 352 That will start and run for about half a second and then die. If I give it gas as soon as it fires up it sputters HARD and then dies after a total of about one to one and a half seconds. Is it getting to much fuel?
View 2 Replieshave just put a motor in this truck. She will start when cold but will not start when hot. problem with the fuel injector maybe????
View 1 RepliesMy car has a bit of trouble starting every now and again. I have noticed it is when I have low fuel. When I try to start it it will just keep winding over. I'll switch my car off completely and try again. It usually starts the second or third time. What could be the problem? Its a 05/06 Hyundai Accent
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