Hello,
I'm Jacob Anderson with Go Fast Guru Synthetics.
I have a 2002 LB7 dmax that is having serious oil dilliution issues.
I had driven nearly 180,000 miles, and started losing prime on the HP pump, so I took it to a shop, with a used, but newer HP pump, and asked that they replace it. Instead they decided that it had to be the injectors, even though all showed to be +-4 on balance rates, and return rates less than 20 ml.
After switching out all injectors, this Shop (Midland Diesel, Fargo ND) told me that because the CP3 pump was bad, (apparently couldn't test it without replacing all the injectors, I was told) they wouldn't warranty their work.
Since having the vehicle back home, it immediately started making fuel, and continued to lose prime. I spoke with a few people, Don@Oregon Injection, and Steve@Competition Diesel, and another local guy I found here in Fargo, Jack Christianson@JC Auto. All of these guys said to check the return lines for the fuel, and that a blockage in the tank would cause the pump to lose prime.
I ran air into the system, till it burbled into the tank. This fixed the priming issue, So I assume the prime was loss due to a blockage in the tank. (probably the sock) I have yet to drop the tank...but I will, after I figure out this major fuel leak.
I pulled the return lines off the head, and checked vacuum on each bank...neither would hold. So, I took valve covers off, bought new seal kits for the return lines. When I was taking things apart, there were a lot of stripped bolts. I replaced all the upper valve cover bolts, Midland Diesel had stripped almost every one of them. Of course putting the worst ones in the most inconvenient locations as to not be seen by any customer, or the shop manager.
There were washers stacked on top of one another on the banjo fittings, and everything on the left bank was about hand tight..(broke loose with the torque wrench on 9 ft/lbs). On the right bank everything was impact tight, I thought I was going to break the banjo bolts, getting them off. (torqued at over 40 ft/lbs) Ended up having to replace the return lines, as well as the banjo washers, in order to get both sides to hold vacuum. Now both returns will hold 18in hg for more than 20 mins.
I put a fresh oil change in, and went for a drive. Normal city driving, it maintained normal oil pressure. I took it out on the hiway, and started losing oil pressure fast. After 30 miles at 70 (~2100rpm) I could feel the pistons throwing liquid around...Shaking the truck. I very quickly routed myself home. Upon arrival to the garage, I had oil spewed all over the underside of the truck, and when I pulled the dipstick, I only see Diesel fuel. In less than 25 miles, I went from having brand new series 3000 Amsoil oil, to having nothing in there.
I don't know what else could cause that large of a leak?
I called Oregon Injection back, and Don thinks that the CP3 pump I used (junkyard rollover with 5k on the truck, Pulled the pump myself, everything seemed in great shape) may have been sitting too long and the seals dried out, causing them to leak excessive amounts of fuel into the crankcase..?
Upon going down the hiway, it was like something popped...when I first got on it, everything seemed normal. At around 50 miles things went dramatically bad...doing the paper towel test upon arrival. I see no oil...just fuel, and a few tiny metallic flakes, as it drips off the dipstick. I'm extremely frustrated and about to run out of money, I've sunk over 5k in it, and still isn't fixed.
When I got the truck, it was a MN DOT vehicle, it still starts everytime, and runs great. It seems I'm missing something?
Is there anything that could have been sabotaged upon Injection replacement?..It was very obvious someone did a horrible job on the return lines, and with all the bolts being messed up...they obviously wanted it back for more labor money.
I'm sick of having to sink money into a vehicle that was the most reliable vehicle in my Fleet, prior to it being rolled into MidLand Diesel.
PLEASE HELP!!
I'm Jacob Anderson with Go Fast Guru Synthetics.
I have a 2002 LB7 dmax that is having serious oil dilliution issues.
I had driven nearly 180,000 miles, and started losing prime on the HP pump, so I took it to a shop, with a used, but newer HP pump, and asked that they replace it. Instead they decided that it had to be the injectors, even though all showed to be +-4 on balance rates, and return rates less than 20 ml.
After switching out all injectors, this Shop (Midland Diesel, Fargo ND) told me that because the CP3 pump was bad, (apparently couldn't test it without replacing all the injectors, I was told) they wouldn't warranty their work.
Since having the vehicle back home, it immediately started making fuel, and continued to lose prime. I spoke with a few people, Don@Oregon Injection, and Steve@Competition Diesel, and another local guy I found here in Fargo, Jack Christianson@JC Auto. All of these guys said to check the return lines for the fuel, and that a blockage in the tank would cause the pump to lose prime.
I ran air into the system, till it burbled into the tank. This fixed the priming issue, So I assume the prime was loss due to a blockage in the tank. (probably the sock) I have yet to drop the tank...but I will, after I figure out this major fuel leak.
I pulled the return lines off the head, and checked vacuum on each bank...neither would hold. So, I took valve covers off, bought new seal kits for the return lines. When I was taking things apart, there were a lot of stripped bolts. I replaced all the upper valve cover bolts, Midland Diesel had stripped almost every one of them. Of course putting the worst ones in the most inconvenient locations as to not be seen by any customer, or the shop manager.
There were washers stacked on top of one another on the banjo fittings, and everything on the left bank was about hand tight..(broke loose with the torque wrench on 9 ft/lbs). On the right bank everything was impact tight, I thought I was going to break the banjo bolts, getting them off. (torqued at over 40 ft/lbs) Ended up having to replace the return lines, as well as the banjo washers, in order to get both sides to hold vacuum. Now both returns will hold 18in hg for more than 20 mins.
I put a fresh oil change in, and went for a drive. Normal city driving, it maintained normal oil pressure. I took it out on the hiway, and started losing oil pressure fast. After 30 miles at 70 (~2100rpm) I could feel the pistons throwing liquid around...Shaking the truck. I very quickly routed myself home. Upon arrival to the garage, I had oil spewed all over the underside of the truck, and when I pulled the dipstick, I only see Diesel fuel. In less than 25 miles, I went from having brand new series 3000 Amsoil oil, to having nothing in there.
I don't know what else could cause that large of a leak?
I called Oregon Injection back, and Don thinks that the CP3 pump I used (junkyard rollover with 5k on the truck, Pulled the pump myself, everything seemed in great shape) may have been sitting too long and the seals dried out, causing them to leak excessive amounts of fuel into the crankcase..?
Upon going down the hiway, it was like something popped...when I first got on it, everything seemed normal. At around 50 miles things went dramatically bad...doing the paper towel test upon arrival. I see no oil...just fuel, and a few tiny metallic flakes, as it drips off the dipstick. I'm extremely frustrated and about to run out of money, I've sunk over 5k in it, and still isn't fixed.
When I got the truck, it was a MN DOT vehicle, it still starts everytime, and runs great. It seems I'm missing something?
Is there anything that could have been sabotaged upon Injection replacement?..It was very obvious someone did a horrible job on the return lines, and with all the bolts being messed up...they obviously wanted it back for more labor money.
I'm sick of having to sink money into a vehicle that was the most reliable vehicle in my Fleet, prior to it being rolled into MidLand Diesel.
PLEASE HELP!!
