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Ford F-350 Diesel Dualie, 7.3 turbo. 114,000 miles Having difficulty starting in cooler, but not freezing weather. If I plug in to warm the engine block it starts just fine. Could it be the glow plugs or residual problems from a bad tank of diesel (5 tanks ago)? The glow plugs are the originals. thanks so much for your input!

Answers from the Automotive Experts

Amanda J. Pierce, MBA Lene, You may need to check the manufacturer recommended interval to replace your glow plugs. You very well may be due to service and replace. You also may be in need of replacing your fuel filter as well.

Barb Petrey, President - DBK Enterprises Inc at Jiffy Lube It could be fuel related or the glow plugs. I suggest seeing a good mechanic

Bogi Lateiner, Owner and Technician at 180 Degrees Automotive Hi Lene - Could be that the glow plugs are getting weak, especially if heating the block resolves the problem. Unless the problem only started after the bad tank of gas - i wouldn't expect that to be the issue - especially 5 tanks ago. But you might try some diesel fuel addative to absorb any moisture or build up that might be in the system just to be sure, it can't hurt. If the problem persists or gets worse i would have it checked out by a diesel specialist. Good luck! Bogi Lateiner 180 Degrees Automotive, Inc.

Laurie Sarno, Co-Owner at Super Girls Auto Hello Lene- best guess it is time for new glow plugs also the glow plug control system should be checked for proper operation-also change your fuel filter as this should be done on a regular basis to prevent damage to your fuel injectors- hope this helps - thanks Super Girls Auto.

Suzanne Grego, Technician at City of Philadelphia Fleet Management Lene, It is extremely important to use high quality fuel with these engines. I actually have a lot of experience with these in particular and I consider them to be 'powerful but delicate.' It could be a glow plug problem, but more times than not, in my experience, it has turned out to be a fuel injector issue. The only way to really know for sure is to bring the vehicle to a Ford dealership that can plug in and find out what is happening in each individual cylinder. Suzanne

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