351w problem

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May 29, 2004 | 02:48 PM

Lost

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Joined: May 2004

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351w problem

I'm a bit tapped on money so i'm coming here to hopefully find a faster answer to what my problem might be.

Here's the problem:

For about the last 2 or 3 weeks I have had a problem with my '83 bronco when i would first drive it. It would idle perfectly fine, but once i hit the gas it sputters and would barely go anywhere. It was starting to get really bad over the last week and would even stall at times also.

I changed the spark plugs hoping it was a problem with them, i put new ones in correctly gapped and it ran fine for about the first 5 mins, and then tried dying on me when i stopped. I found out the problem there was a loose spark plug wire.

So then i went to drive it again after rechecking the gap and wire connections, and it would sputter when i would accelerate, and it does it regardless of having driven the truck already or not.

I replaced the distributor cap and rotor as they were corroded but it's not a problem there either.

I'm thinking my next step should be to replace the wires but they only have about 10-20k miles on them and seem fine?

Any help would be appreciated

May 29, 2004 | 03:50 PM

jwtaylor

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Another easy thing to change, just to be sure its not something simple, would be the fuel filter.

May 31, 2004 | 01:05 AM

mjl351w

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Joined: Dec 2002

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From: Akron

how many miles are on it ? almost sounds like it is time for a timing chain. If i was you i would pop the dist. cap and check the timing chain slop

Jun 19, 2004 | 08:01 AM

dlberry1969

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I was originally looking for a vacuum line diagram/schamatic for a 84' f-150, 351w 4brl.. But coming across this posting, it sounds like i have the same problem as your having. The truck will start and idle great. Sounds like a engine should. But after about 5 minute of driving the truck, it decides to die on me. I have tried the same things as you have, plus some. I believe it has to do with the vacuum lines, or the fuel lines. It could also(maybe) be the whole fuel-air compression system, which is the carborator. Any thing anyone could tell me to help out would be great. My only mode of transportation is down till i find out what it is exactly.

Jun 20, 2004 | 06:52 AM

Pro-Street/StateTK

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From: East Flat Rock NC

I know to some people this may seem wrong , but in the past ive have had
the same problem and it was a slowly failing fuel pump. These 351ws seem
to eat fuel pumps after buying bad one after bad one at the parts stores
i bought a hp holley. And problem gone!

Jun 20, 2004 | 08:12 AM

71swissaqua

Elder User

Joined: Jul 2001

Posts: 602

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From: Huntersville

I agree with JWatylor. Check the simple stuff first. Check your fuel filter. also check your timing is correct and check that your accelerator pump is working.
Clint