*THE HULL TRUTH is the world's largest FREE network for the discussion of Boating & Fishing. Whether you're researching a new boat, or are a seasoned Captain, you'll find The Hull Truth Boating & Fishing Message Forum contains a wealth of information from Boaters and Sportfishermen around the world.
Welcome to the updated THT!
If you are having trouble signing in, please email feedback@thehulltruth.com with your username and we will help you. We thank you for your patience as we help you access the new site!
Fished with a buddy yesterday with twin 200 HPDI's on his scarab. They sounded good and ran nicely but I did notice alot of smoke.
He hasn't had any problems after adout 100 hrs.
Does the HPDI system have a tendency to smoke? I have been on Bombs(Evinrude) bandwagon but truth is I am considering buying the Scarab(200 HPDI's included)because it's a good deal.
Anyone have 200 HPDI'show do you like them and do they smoke?
I have a 2001 200 HPDI well over 100 hours, 3rd season, and no smoke. The motor has been great, very quite, efficient and reliable. Two minor problems, a clogged secondary fuel filter and some carb build once, most likely from some extensive low speed idleing. Both problems noticable only at full throtle and fixed first visit to the shop.
I've had a problem with mine smoking bad twice. It would only happen while drift fishing. Starting the motor making a short run, turning it off fishing for 15/20 min then starting it back up. After the forth or fifth time it was started it smoked like a flordia sketer truck. I pulled the cowl off the motor and noticed that the tank on the engine was over full. I took it back to the dealer and they had a hell of a time figuring it out(they couldn't get it to do it again). Got the boat back and it was great for about another 5-6 hours. Then it happend again, same thing only while drift fishing(turning the engine on and off several times). Took it to a different dealer, they removed the tank on the engine and the one in the boat. The only thing they think they found wrong was a possibility of the sensor/float in the engine tank was in slightly crooked or sticking. I've put 10 hours on the motor since, but have not drift fished yet. I'm hoping it doesn't come back. And yes, it was put on computer for troubleshooting both times.
I have a 200 HPDI year 2002. With around 110 hours, and no smoke. Sounds like he might need something checked. The only time I ever see smoke is at startup, and that is only if it has been more than about 2-3 weeks between start ups.
Thats exactly what we were doing, drifting. I didn't really notice it when he first started the boat but after we would shut down for a 15-20 minute drift, it would blow smoke when he started it.
I have a 2002 150 HPDI with around 75 hours on it and I have never seen it smoke. It set up for around 3 months this past winter and I figured it would smoke the first time I started it this spring but it didn't put out a whisper of smoke. I know there have been a lot of posts lately about the Yahamas but I have really been pleased with mine. Windjammer
I have two, I rarely see any smoke come out of them.
However, sometimes you will see steam or fog come out of them depending on the temerature of the motor and/or air. The temperature difference can cause some steam while it warms up. Also, when first starting them, the use more oil than normalluy to be sure the motor is well lubricated, that oil has to burn off.
To all those hpdi owners, The most over look service on the engine is the screen inside the vst. Once a year open that tank up and clean the bowl and the screen on the bottom of the fuel pump. Not only does it protect the fuel pump but most of all your injectors.. Which i found out can not be cleaned, and 300.00 dollars a pop to replace.
Whalomon, which Scarab are those 200 HPDI's running on and how do they perform. I am thinking about a pair of 250's for a 302 Sport but would be happy to go with 200's if 1 engine would at least plane the boat and top end would be about 50mph.
I have 2002 200hp HPDI's with about 575hours on them. One of them smokes a little on start up(cold) and stops quickly. Several mechanics have told me not to worry about it. They say it may be a check valve sticking in the oil pump and oil leaks into the cylinder, burns off after start up. If it gets worse, they recommend changing oil pumps. If it stops right away, don't worry. If it smokes continously, get it fixed. They do not smoke alot if at all.
It's a 36' Scarab. It gets on a plane nicely and tops around 53 mph GPS. I don't know if one will get it on plane but I will ask.
I thought one of the main selling points of DI motors was that they don't smoke? I am not worried about some smoke on cold start up but seems weird that they smoked on each succesive start up.
I'm gonna venture a guess on this one as I have some experience with smoking on yams (carbed and OX-66). It may help you HPDI guys so here goes. There are two ways to get these engines to smoke, we're talking oil smoke, not condensation.
The first way is for the main tank to overfill. This sends excess oil through a small overflow tube(located at the top of the engine oil tank) into the intake cover. Usually cause by a sticking or defective float. These floats are sensitive to position at installation,make sure they go in correctly and operate perfectly. The worst case on this is the float gets stuck in the full position and you get no low oil warning.
The second is grit in the check valves in the oil pump housing(older engines) or inline valves (newer engines). This causes oil to weep into the intake manifold after shutdown. It only takes a small amount of oil to cause a decent smoke plume, which burns off in a few minutes. This will likely be specific to one or two cylinders(ever wonder why that plug is the only one to foul all the time?) Worst case is a large amount of oil weeps out (overnight) and when you go to start up you get a hydraulic lock- possibly bending a rod, at least choking the place out. Many times this will resolve itself,as the oil flow passes the grit and frees the check ball. The inline valves are less than ten bucks each, butyou can pull them and blow them out with a can of compressed air. They have an arrow and only flow one way, so get'em in correctly or you're screwed.
Smoking HPDI's 
