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Gm I have a 04 GMC c7500 7.2 Diesel engine cranks but will
Gm I have a 04 GMC c7500 7.2 Diesel engine cranks but will not start, I replaced the Heui pump, and no fuel coming … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
Have a c7 cat with fault codes 164 and 42. Replaced wiring
Have a c7 cat with fault codes 164 and 42. Replaced wiring harness on engine and injectors. Still missing and smoking … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
CAT C7 engine. Would like to get to Cat Man. Having issues
CAT C7 engine. Would like to get to Cat Man. Having issues with this engine. Suspect an intermittant speed sensor issue. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
ENGINE MISS-FIRE !! 2004 F650 V.I.N. 4V665219 Catapillar C-7
ENGINE MISS-FIRE !!2004 F650 V.I.N. 4V665219 Catapillar C-7 Ascert Engine # KAL08810 ECM # 25636120IE Engine Hours 3952COMPLAINT: Truck came to our shop with an intermittent miss on engine. The longer… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
Have complicated and unusual case. Brand new FMM26704 Cat
Brand new FMM26704 Cat was installed replacing KAL48257 … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
If my heui pump on my cat c7 has a light paste of metal
If my heui pump on my cat c7 has a light paste of metal shavings is it absolutely necessary to replace all 6 injectors along with heui pump … read more
Aaron Evans
Aaron Evans
MOBILE FLEET MANAGER
44 satisfied customers
Cat c7, 2004 m2 freightliner, doing it myself, i have a cat
hi JA: Hi. What is your issue regarding? Customer: cat c7 JA: What's the make/model/year of your truck? Engine type? Customer: 2004 m2 freightliner JA: Are you fixing your truck yourself? What have yo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
Bud. I have a question for ya on a C7 cat in a 2005 ford. It
Hey bud. I have a question for ya on a C7 cat in a 2005 ford. It is a 210hp is there any way to bump up the hp a little without major parts replacement like injectors and turbo? I have cat et. Thanks … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
Gregg here, I have C7, came in running rough, hooked up
Hi, Gregg here, I have C7, came in running rough, hooked up etech and had 164-11 and 164-2. ckd oil was over full. took off vc and psi test fuel sys, found 2 inj leaking fuel. replaced. now engine run… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I am purchasing a 2006 safari motorhome with a Cat. c7 350
I am purchasing a 2006 safari motorhome with a Cat. c7 350 hp engine 13,000 miles. engine s/n ********** I have read that these engines may have poor fuel pumps that fail and take out the injectors al… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
c 7 cat with derate at 55 mph says low fuel pressure . regulator
c 7 cat with derate at 55 mph says low fuel pressure . regulator changed 12000 miles transfer pump changed with no effect on derate… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
Im working on a c7 in a truck. I have 1740psi injection actuation
Im working on a c7 in a truck. I have 1740psi injection actuation pressure at idle. have changed huei pump, iap sensor, injectors, and ecm. fuel pressure is 60 at idle. truck misses bad below 2000rpm.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
2000 CAT 3126 IN A FREIGHTLINER, I HAVE REPLACED ALL INJECTORS
2000 CAT 3126 IN A FREIGHTLINER, I HAVE REPLACED ALL INJECTORS , PRESSURE REGULATOR CK VALVE REAR OF HEAD , AND ALSO REPLACED FUEL PUMP ON BACK OF HEUI. STILL WHEN STAR UP COLD [ 60 DEGREES ] FIRES RI… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
2000 FRTL FL-80 HAS 3126B CAT / 10,000 HRS. / FIRST START
2000 FRTL FL-80 HAS 3126B CAT / 10,000 HRS. / FIRST START UP IN BUILDING AT 50 DEGREES / RUNS ROUGH MISSES AND SMOKE / I HAVE REPLACED 6 INJECTORS , TRANSFER PUMP / AND PRESSURE REGULATOR CK VALVE ON … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
We talked about this same engine earlier and you gave me the
We talked about this same engine earlier and you gave me the following advice...I assumed you had a C7. The C7 has much more problems than the earlier 3126. The Heui pumps on C7 engines are known to f… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
Caterpillar 3126/C7 Engine Issues. The following enine is in
Caterpillar 3126/C7 Engine Issues. The following enine is in the shop with failure issues. Can you advise as to perhaps why engine has continual engine issues? Here is a history of engine issues in th… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
2005 FREIGHTLINER M2 WITH A CAT C7. INITIAL START IN THE COLD
2005 FREIGHTLINER M2 WITH A CAT C7. INITIAL START IN THE COLD MORNING, THE ENGINE WILL HAVE A LOUD "KNOCK". A SOUND BETWEEN A ROD AND A SEVERE OCTANE KNOCK. THE ENGINE WILL SMOKE LIKE IT IS OVER FUELI… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
hey Cat Man. In regards XXXXX XXXXX 04 C7. Switched out the HEUI
hey Cat Man. In regards XXXXX XXXXX 04 C7. Switched out the HEUI pump. Better idle but wont go over 5mph or so. Smoking like a freight train. Ran cylinder cutout test. Def has some bad injectors which… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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