Diesel Bombers SIGN UP NOW

National Association of Diesel Motorsports
Go Back   Diesel Bombers > Dodge Cummins > 12 Valve 2nd Gen Dodge Cummins 94-98
Sign in using an external account
Register Forgot Password?
Search


Registered Members don't see these ads. Register now it's free!

12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Welcome to Diesel Bombers Forums!
Welcome to DieselBombers .com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Diesel Bombers Forums community today!


Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-31-2011, 04:57 PM
Diesel Fan

   

Default OFV?

My first diesel is this 98 Dodge 12v Cummins 2500 4x4 it has been trouble free for over a year. The previous owner spent lots of money on it, so most of the upgrades are done, turbo, injectors, trans work, gears, fuel plate, exhaust... It is currently parked in my drive way. It starts and runs good, but dies by the time I get to the end of my street, and will not start back up for about 20 minutes. When it dies out it starts sputtering like a gas engine does when running out of fuel. I have changed the fuel filter. I have noticed a decrease in fuel economy and some additional smoke recently. Any help would be appreciated.
Reply With Quote
  #2  
Old 07-31-2011, 06:01 PM
Newbie

   
Send a message via Yahoo to 6,2 TWICE

Default

i don't know much about 98 Dodge but somewhere in here someone explains about the same symptoms on a diesel Silverado. Practically, the answer is bad fuel pump, or no power to fuel pump because of OPS.
Reply With Quote
  #3  
Old 07-31-2011, 06:45 PM
daveO's Avatar
Diesel Bomber

ctd12v
   
View Member's FaceBook Profile

Default

12 valves don't have an electric fuel pump. It would be beneficial to try to get what your fuel pressure is.

daveO's Sig:OUTLAW DB
AMSOIL dealer
*98 Cummins 12v, QC, SB, 2wd, 17* timing, DTT 47RE, HTB2 62/14, ATS Arc-Flow intake, ATS Exhaust manifold, DDP DV's, DDP Stage 4 140hp injectors, 3k GSK, #0 Plate, AFC mods, 5" Aussie stacks, gauges.
Reply With Quote
  #4  
Old 07-31-2011, 09:07 PM
Diesel Fan

   

Default

what (where on the p7100 pump) is the best way to check the pressure? Should I just tap one of the banjo fittings? I tried to stretch the spring on the OFV and it still does the same thing runs good till I drive down the road.
Reply With Quote
  #5  
Old 07-31-2011, 09:19 PM
daveO's Avatar
Diesel Bomber

ctd12v
   
View Member's FaceBook Profile

Default

Yeah, you can tap one of the banjo bolts on the fuel filter housing.
Reply With Quote
  #6  
Old 07-31-2011, 09:37 PM
white93's Avatar
Diesel Wrench

   

Default

Your losing prime somehow. It could be a bad overflow valve, pin hole in a line, fuel heater leaking, fuel filter or prefilter getting clogged. I would start with the pre-filter and deleting the fuel heater.

white93's Sig:1993 D-250. A few towing mods.
1991 D-250 Bone Stock.
Reply With Quote
  #7  
Old 07-31-2011, 09:53 PM
Diesel Fan

   

Default

I have replaced the fuel filter, is there another filter somewhere? No leak. I am goning to tap the banjo fitting and hook up a psi gauge.
Reply With Quote
  #8  
Old 08-01-2011, 08:12 AM
white93's Avatar
Diesel Wrench

   

Default

I believe the '98 12 valves have a pre filter. Fuel Pre-Filter Cleaning on Ram/Cummins when you clean this it a good idea to get rid of the fuel heater ‪Dodge 12 valve Cummins fuel heater delete.‬‏ - YouTube.
Reply With Quote
  #9  
Old 08-01-2011, 10:00 PM
HelenaTDI's Avatar
Diesel Fan
Status: Peace Through Superior Firepower

   
View Member's Albums

Default

Fuel pressure is where to start first. At Idle 17-22psi.

How to check fuel pressure on a 12 valve - Dodge Cummins Diesel Forum

If your looking for an OFV Tork Tek is the ticket. Best Over flow's made in my opinion. They also sell a snubber to hook up a fuel gauge as well.

TORK TEK CUMMINS ADJUSTABLE OVERFLOW VALVE OFV010 - Tork Teknology

Good luck.

HelenaTDI's Sig:1998 Ram 2500 QC, LB, 4x4, 12 Valve, Goerend Billet Auto, ISSPRO gauges, 5" exhaust, sport headlights, DSS steering stablizer, Dynatrac ball joints, DT-Pro fab tracbar, Twins GT3788R Stage3 over S475, ATS Exhaust Manifold, O-ringed, ARP Studs, 60lb valve springs, haisley billet push rods, titanium valve keepers/retainers, SDX 140HP sticks, no fuel plate, 4K GSK, 18.5 degrees timing, Tork Tek Overflow & Snubber, fuel gauge.
Reply With Quote
  #10  
Old 08-02-2011, 06:27 AM
Diesel Fan

   

Default

Thank you. I have ordered the Tork Tek OFV020 and fuel snubber. Once I have the PSI reading I will post. Also going to look for the pre-filter to clean it.
Reply With Quote
 
 
 
submit to reddit
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


 
All times are GMT -5. The time now is 04:15 PM.

Copyright And Legal Notice Links Of Interest

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.5.2
Diesel Bombers ® - All Content Protected Under Intellectual Property Rights Law of Registered Trademarks
Reg. No. 3,494,401 Cls. 100, 101 & 104 Under Int. Cl. 38
USE AT YOUR OWN RISK WE HOLD NO LIABILITY FOR ANY CONTENT RIGHT, WRONG OR INDIFFERENT

Protected by Copyscape Duplicate Content Check


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607