What's your favorite snake oil? - F-Body Road Racing and Autocross Forums

I'm mostly kidding but here's why I ask. My dad noticed his 335d was a little sluggish. He put some Lucas fuel injector cleaner in it and it made a noticeable difference. My E36 M3 has 210,000 miles on it and for a while now it ran like crap until fully warmed up. It would drop a cylinder or something, but since it ran like a champ when at operating temp, it didn't bother me very much. Anyway, after only 40 miles with Lucas in the tank, it doesn't do it anymore. Same with my boat and even my 7.3 Powerstroke is running better.

So my 97 SS has a junkyard LT1 in it. It only has 116,000 miles on it but it's been sitting for years. I recently got the car on the road. It has great oil pressure, doesn't smoke, but runs very rough. The fuel injector cleaner is helping but I think there's a compression problem. Is there anything on the shelves that can help with that? I know there are products that say they can, but anything that actually works like the fuel injector cleaner? My goals for this engine is to do a few track days with it and sometime next year swap an LS1 into it. I just need to get by for about a year or so. I only paid $380 for engine so I'm not too worried about it.

Steve91T View Member Profile	Dec 21 2015, 04:32 PM Post #1
Experienced Member Group: Advanced Members Posts: 2,038 Joined: 3-March 10 From: Huntersville, NC Member No.: 9,105	I'm mostly kidding but here's why I ask. My dad noticed his 335d was a little sluggish. He put some Lucas fuel injector cleaner in it and it made a noticeable difference. My E36 M3 has 210,000 miles on it and for a while now it ran like crap until fully warmed up. It would drop a cylinder or something, but since it ran like a champ when at operating temp, it didn't bother me very much. Anyway, after only 40 miles with Lucas in the tank, it doesn't do it anymore. Same with my boat and even my 7.3 Powerstroke is running better. So my 97 SS has a junkyard LT1 in it. It only has 116,000 miles on it but it's been sitting for years. I recently got the car on the road. It has great oil pressure, doesn't smoke, but runs very rough. The fuel injector cleaner is helping but I think there's a compression problem. Is there anything on the shelves that can help with that? I know there are products that say they can, but anything that actually works like the fuel injector cleaner? My goals for this engine is to do a few track days with it and sometime next year swap an LS1 into it. I just need to get by for about a year or so. I only paid $380 for engine so I'm not too worried about it.

BryanL View Member Profile	Dec 22 2015, 04:07 PM Post #2
Member Group: Advanced Members Posts: 217 Joined: 6-March 07 Member No.: 1,710	Curious about the 335d as I have looked into buying one in the past. Problem I found was due to the EGR and DPF where it would end up clogging up the intake I think which results in a very costly repair. Lots of diesel trucks guys run an additive but didn't know if it was recommended for the Bimmer diesel. How many miles and what type of driving on the 335d? As for your question and needs there are other fuel injector cleaning systems that hook up to the fuel rail but I have used Chevron's Techron. If you want to try something for the engine internals like the pistons then seafoam might be an option. I don't know if it's just a smoke show or if it actually does anything.