When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hi there, i have a 1988 F-150 4x4 with 5spd manual and auto lock hubs. It has a 351w EFI out of a 91. ive been having alot of trouble since i bought but have a few ideas on the causes but seeking additional help. when i first got it it wouldnt run for nothing. Ive changed the plugs and wires on it, fuel pump on the rail, and i still cant keep it running. I can get it to crank up and start but it likes to die out over a few mins.
Not sure if its the timing, the two bad fuel pumps in the tanks, the distributor, or pressure reg. or combo of the lot of them. (note: truck and fuel has been sitting since 2013)
Im aware the gas is bad and ive been dumping fresh fuel in it and even a can of seafoam in each tank. any help would be nice.
Putting fresh gas into a fouled tank just fouls more gas. Drop the tanks, and either clean them (a nightmare) or replace them (I prefer OE from the junkyards). Read this & the NEXT dozen captions:
Putting fresh gas into a fouled tank just fouls more gas. Drop the tanks, and either clean them (a nightmare) or replace them (I prefer OE from the junkyards). Read this & the NEXT dozen captions:
my next step is to either pull the bed and then the pumps and tanks or just drop them. though its a bit of hassel pulling the bed i fell it would make it easier to remove the tanks and pumps
Fresh fuel would be the first suggestion - had a Jeep that sat for two years (2012-2014), fuel in the tank turned brown and had a strong varnishy smell to it. FWIW, if it's a true '88, will have one low pressure pump in each tank and one common high pressure pump along the driver side frame rail about under the brake pedal. Many have converted over the years to the single high pressure pump in each tank setup that became standard in 90 or 91. Changing the fuel filter is a must, IMO, also, if you're pulling the tank pumps, inspect the pickup screen for any pluggage.
Fresh fuel would be the first suggestion - had a Jeep that sat for two years (2012-2014), fuel in the tank turned brown and had a strong varnishy smell to it. FWIW, if it's a true '88, will have one low pressure pump in each tank and one common high pressure pump along the driver side frame rail about under the brake pedal. Many have converted over the years to the single high pressure pump in each tank setup that became standard in 90 or 91. Changing the fuel filter is a must, IMO, also, if you're pulling the tank pumps, inspect the pickup screen for any pluggage.
Ive already had the rail pump changed along with the filter and i added seafoam. idk what the tank pumps look like yet as ive yet to get down there and look. the truck had been sitting since 2013 so i can guess that they will need to be replaced and maybe have the tanks deep cleaned. cause when i do manage to get it started and running it smells like a boat motor running and there is a odd colored smoke from the tail pipes
07-02-2018, 12:03 PM
1988 F150 4x4 with 91 351w
