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06-16-2008, 08:46 PM | #26 | |
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Re: guys i pulling my hair out i need help
Quote:
To ensure you're on the right cam rotation with the dots lined up, the crank key should point to about 2:00, and the cam pin should be at about 3:00. |
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06-16-2008, 08:59 PM | #27 |
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Re: guys i pulling my hair out i need help
wellt he truck wont even run now unless you hold the pedal to the floor and even then it will barely run
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
06-16-2008, 09:05 PM | #28 |
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Re: guys i pulling my hair out i need help
it really sounds like a carb issue to me. i'd try a new carb and make sure it has a good fuel filter and its getting good clean gas.
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06-16-2008, 09:05 PM | #29 |
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Re: guys i pulling my hair out i need help
Since you've done everything but replace the carb again. Take it back and tell them it's bad. If you still have a warranty that is.
Years ago, I bought one from Auto Zone and had to return it. Wouldn't be surprised if that's been your problem all along. Backfiring is caused by unburned fuel. As raw fuel builds up it can be ignited by engine exhaust heat. A miss or popping in the exhaust is not as drastic but is also unburned fuel igniting but in lesser amounts. Either the carb (running rich), plugs or wiring can be a problem. Bad exhaust valves not seating properly can cause it by letting raw fuel seep out on the compression stroke. Anything that may prevent a complete combustion is suspect. A good way to check for crossfirng if you supect an ignition problem is to spray a fine mist on the wires at night. If there is any problem, you'll see the arcing. I had one bad plug on my 250 that caused a slight sputtering miss. I wound up replacing all of them. Been running smooth since. |
06-16-2008, 09:07 PM | #30 |
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Re: guys i pulling my hair out i need help
What are the chances you've got a valve or two a bit too tight? Once it starts warming up the valve may not be seating. It can kill the power too.
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06-16-2008, 09:08 PM | #31 |
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Re: guys i pulling my hair out i need help
make sure theres no rust or other stuff getting in the carb and getting in between the needle and seat and holding the needle open, which would create a severe rich condition. do you smell gas when your trying to start it?
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06-16-2008, 10:01 PM | #32 | |
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Re: guys i pulling my hair out i need help
i call carb also, the edelcrock my 69 had would do that about once every 2 weeks... had to pull over on the side of the road, adjust it again, and take off
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ASE Master Certified-GM Trained-Mechanic 1968 Chevy C30 157" WB Wrecker 1969 Chevy CST/10 SWB 1971 Chevy Custom/10 (first truck) 350, NV3500 5 speed 1971 Chevy K20 Custom Camper 4x4 350 TBI, SM465/NP205 1974 Chevy Custom Deluxe/10 1979 Chevy Custom Deluxe K10 farm truck beater 1989 Chevy K2500 Quote:
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06-16-2008, 10:05 PM | #33 |
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Re: guys i pulling my hair out i need help
running a clear plastic filter fuel is clear as a bell no trash carb is out of warranty bought 2 years ago had planed on doing the swap earlier but had stuff come up
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
06-16-2008, 10:58 PM | #34 | |
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Re: guys i pulling my hair out i need help
Quote:
Plastic, or glass filters may look nice. But when paired with hot parts, they are nothing short of a recipe for disaster. Just my .02.
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'69 Chevy 1/2 T LWB Stepper: Daily Beater '72 GMC 3/4 T Fleet: Another Daily Beater '72 Plymouth Gran Coupe: ? "Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche "Never kick a fresh turd on a hot day." Harry S. Truman GUN CONTROL: Never having to say, "I missed you." Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck |
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06-16-2008, 11:03 PM | #35 |
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Re: guys i pulling my hair out i need help
filter is almost 3 inches from anything in ngine compartment never had a problem
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
06-17-2008, 12:25 AM | #36 |
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Re: guys i pulling my hair out i need help
I'd rather have you, or anybody else, call me on that; instead of somebody losing a truck.
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'69 Chevy 1/2 T LWB Stepper: Daily Beater '72 GMC 3/4 T Fleet: Another Daily Beater '72 Plymouth Gran Coupe: ? "Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche "Never kick a fresh turd on a hot day." Harry S. Truman GUN CONTROL: Never having to say, "I missed you." Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck |
06-17-2008, 12:28 AM | #37 |
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Re: guys i pulling my hair out i need help
YAh, that would put him 180 off of tdc if he dropped the distributor in, thinking he was on tdc #1 when he was on tdc #6
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06-17-2008, 06:21 AM | #38 |
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Re: guys i pulling my hair out i need help
we put the truck on compression strock on cylinder one with balancer pointing at 0 you can see the piston at the top of the bore though spark plug hole
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
06-17-2008, 10:16 AM | #39 |
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Re: guys i pulling my hair out i need help
This tells you the cam is probably not 180 out...but it doesn't locate TDC for timing accuracy or tell you that the cam isn't a tooth or two out.
IMHO, this is a timing issue - and in any case, always ensure the timing is right before moving on to the carb. My suggestion remains verifying TDC and working from there, but I'm being a broken record so I'll drop Last edited by Billla; 06-17-2008 at 10:17 AM. |
06-17-2008, 10:33 AM | #40 |
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Re: guys i pulling my hair out i need help
well i towed it to the shop yesterday waiting on them to call me to let me knwo more i had to mvoe it because where it was parked the people had to be out fo there house today
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
06-17-2008, 03:45 PM | #41 |
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Re: guys i pulling my hair out i need help
If the distributer is still in it, than were is the rotor pointing? Just because your on TDC with the piston up doesn't mean that your on compression stroke, you may be on exhaust stroke. Now with your balancer marks at zero and the #1 piston up, it should be on tdc, but if the timing gear wasn't installed correctly, than it wouldn't be correct.
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06-20-2008, 08:35 PM | #42 |
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Re: guys i pulling my hair out i need help
well guys jsut picked it up from t he shop. plugs where fouled , 3 wires where bad and the dis was out
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
06-20-2008, 08:55 PM | #43 |
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Re: guys i pulling my hair out i need help
Looks like problem is fixed then??... Is it running smooth now?
Those multiple bugs can sure mess you up. The problem is you chase one and the others still give you problems. I worked in the computer industry for over 30 years and some of my worse problems were when there 2 or more bugs involved... |
06-20-2008, 09:15 PM | #44 |
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Re: guys i pulling my hair out i need help
yup running strong that 305 sure has more power then my 327 i had in it (327 was wore out)
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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